Name: 
 

8th grade Math Final 2



 1. 

Sketch the graph of the equation mc001-1.jpg.
a.
mc001-2.jpg
c.
mc001-4.jpg
b.
mc001-3.jpg
d.
mc001-5.jpg
 

 2. 

The length of a rectangle is 8 cm more than four times the width. If the perimeter of the rectangle is 46 cm, what are the dimensions?
a.
width = 3 cm, length = 40 cm
c.
width = 6 cm, length = 32 cm
b.
width = 6 cm, length = 40 cm
d.
width = 3 cm, length = 20 cm
 
 
Divide:
 

 3. 

mc003-1.jpg
a.
mc003-2.jpg
c.
mc003-4.jpg
b.
mc003-3.jpg
d.
mc003-5.jpg
 

 4. 

Use substitution to solve the linear system.
sa004-1.jpg
 
 
Tell whether the expression is a polynomial. Write Yes or No.
 

 5. 

sa005-1.jpg
 

 6. 

sa006-1.jpg
 
 
Find the product.
 

 7. 

sa007-1.jpg
 

 8. 

sa008-1.jpg
 

 9. 

17x(3x – 5)
 

 10. 

sa010-1.jpg
 

 11. 

sa011-1.jpg
 

 12. 

sa012-1.jpg
 

 13. 

sa013-1.jpg
 

 14. 

mc014-1.jpg
a.
mc014-2.jpg
c.
mc014-4.jpg
b.
mc014-3.jpg
d.
mc014-5.jpg
 

 15. 

mc015-1.jpg
a.
mc015-2.jpg
c.
mc015-4.jpg
b.
mc015-3.jpg
d.
mc015-5.jpg
 

 16. 

mc016-1.jpg
a.
mc016-2.jpg
c.
mc016-4.jpg
b.
mc016-3.jpg
d.
mc016-5.jpg
 

 17. 

mc017-1.jpg
a.
mc017-2.jpg
c.
mc017-4.jpg
b.
mc017-3.jpg
d.
mc017-5.jpg
 

 18. 

mc018-1.jpg
a.
mc018-2.jpg
c.
mc018-4.jpg
b.
mc018-3.jpg
d.
mc018-5.jpg
 

 19. 

mc019-1.jpg
a.
mc019-2.jpg
c.
mc019-4.jpg
b.
mc019-3.jpg
d.
mc019-5.jpg
 

 20. 

A rocket is launched from atop a 75 foot cliff with an initial vertical velocity of 107 feet per second. The height of the rocket t seconds after launch is given by the equation mc020-1.jpg. Graph the equation to find out how long after the rocket is launched it will hit the ground. Estimate your answer to the nearest tenth of a second.
a.
7.3 seconds
b.
4.0 seconds
c.
9.0 seconds
d.
0.6 seconds
 
 
Factor the trinomial.
 

 21. 

sa021-1.jpg
 

 22. 

sa022-1.jpg
 

 23. 

sa023-1.jpg
 

 24. 

sa024-1.jpg
 
 
Simplify:
 

 25. 

sa025-1.jpg
 

 26. 

mc026-1.jpg
a.
mc026-2.jpg
c.
mc026-4.jpg
b.
mc026-3.jpg
d.
mc026-5.jpg
 
 
Find the sum.
 

 27. 

mc027-1.jpg
a.
mc027-2.jpg
c.
mc027-4.jpg
b.
mc027-3.jpg
d.
mc027-5.jpg
 

 28. 

A rectangular garden, with length four times its width, is to be expanded so that both sides are increased by 3 yards.
mc028-1.jpg
Let x represent the original width of the garden. Write an expression that models the area of the expanded garden.
a.
mc028-2.jpg
c.
mc028-4.jpg
b.
mc028-3.jpg
d.
mc028-5.jpg
 
 
Complete the table of values for the given function. Then graph the function.
 

 29. 

sa029-1.jpg
x
–2
–1
0
1
2
y
     
sa029-2.jpg
 

 30. 

Divide mc030-1.jpg by mc030-2.jpg.
a.
mc030-3.jpg
c.
mc030-5.jpg
b.
mc030-4.jpg
d.
mc030-6.jpg
 

 31. 

Rewrite using only positive exponents:  sa031-1.jpg
 
 
Simplify:
 

 32. 

mc032-1.jpg
a.
mc032-2.jpg
b.
mc032-3.jpg
c.
mc032-4.jpg
d.
mc032-5.jpg
 

 33. 

mc033-1.jpg × mc033-2.jpg × mc033-3.jpg
a.
mc033-4.jpg
b.
mc033-5.jpg
c.
mc033-6.jpg
d.
mc033-7.jpg
 

 34. 

mc034-1.jpg
a.
mc034-2.jpg
b.
mc034-3.jpg
c.
mc034-4.jpg
d.
mc034-5.jpg
 

 35. 

mc035-1.jpg
a.
mc035-2.jpg
b.
mc035-3.jpg
c.
mc035-4.jpg
d.
mc035-5.jpg
 

 36. 

sa036-1.jpg × sa036-2.jpg × sa036-3.jpg
 

 37. 

mc037-1.jpg
a.
mc037-2.jpg
c.
mc037-4.jpg
b.
mc037-3.jpg
d.
mc037-5.jpg
 

 38. 

mc038-1.jpg
a.
mc038-2.jpg
c.
mc038-4.jpg
b.
mc038-3.jpg
d.
mc038-5.jpg
 
 
Solve the system:
 

 39. 

mc039-1.jpg
a.
(mc039-2.jpg, 1)
b.
no solution
c.
(1, –3)
d.
(4, mc039-3.jpg)
 

 40. 

sa040-1.jpg
 

 41. 

sa041-1.jpg
 

 42. 

mc042-1.jpg
a.
no solution
b.
mc042-2.jpg
c.
mc042-3.jpg
d.
mc042-4.jpg
 

 43. 

Use a vertical format to find the product sa043-1.jpg.
 

 44. 

Simplify sa044-1.jpg
 

 45. 

How would you translate the graph of mc045-1.jpg to produce the graph of mc045-2.jpg
a.
translate the graph of mc045-3.jpg right 4 units
b.
translate the graph of mc045-4.jpg down 4 units
c.
translate the graph of mc045-5.jpg left 4 units
d.
translate the graph of mc045-6.jpg up 4 units
 
 
Simplify the expression using positive exponents.
 

 46. 

mc046-1.jpg
a.
mc046-2.jpg
c.
mc046-4.jpg
b.
mc046-3.jpg
d.
mc046-5.jpg
 

 47. 

mc047-1.jpg
a.
mc047-2.jpg
c.
mc047-4.jpg
b.
mc047-3.jpg
d.
mc047-5.jpg
 

 48. 

Simplify mc048-1.jpg.
a.
mc048-2.jpg
b.
mc048-3.jpg
c.
mc048-4.jpg
d.
mc048-5.jpg
 

 49. 

You can work a total of no more than 36 hours per week at your two jobs. Housecleaning pays $5 per hour, and your sales job pays $11 per hour. You need to earn at least $266 per week to cover your expenses. Write a system of inequalities that shows the various numbers of hours you can work at each job.
 

 50. 

A rocket leaves the barrel of a launcher at a height of 5 feet off the floor, with an initial velocity of 160 feet per second. The equation describing the rocket's height after t seconds is sa050-1.jpgThe graph below shows the rocket's height as a function of time.
sa050-2.jpg
What is the maximum height reached by the rocket and how many seconds did it take for the rocket to reach that height? Estimate the height value to the nearest 25 feet and the time value to the nearest tenth of a second.
 
 
Use the quadratic formula to solve the equation. Round your solution to the nearest hundredth, if necessary.
 

 51. 

sa051-1.jpg
 

 52. 

sa052-1.jpg
 

 53. 

sa053-1.jpg
 

 54. 

sa054-1.jpg
 
 
Find the difference.
 

 55. 

mc055-1.jpg
a.
mc055-2.jpg
c.
mc055-4.jpg
b.
mc055-3.jpg
d.
mc055-5.jpg
 

 56. 

mc056-1.jpg
a.
mc056-2.jpg
c.
mc056-4.jpg
b.
mc056-3.jpg
d.
mc056-5.jpg
 
 
Use the discriminant to determine the number of real solutions of the equation.
 

 57. 

sa057-1.jpg
 

 58. 

sa058-1.jpg
 
 
Tell whether the function has a minimum value or a maximum value. Then find the minimum or maximum value.
 

 59. 

sa059-1.jpg
 

 60. 

sa060-1.jpg
 
 
Simplify. Write your answer using exponents.
 

 61. 

mc061-1.jpg
a.
mc061-2.jpg
b.
mc061-3.jpg
c.
mc061-4.jpg
d.
mc061-5.jpg
 

 62. 

mc062-1.jpg
a.
mc062-2.jpg
b.
mc062-3.jpg
c.
mc062-4.jpg
d.
mc062-5.jpg
 

 63. 

mc063-1.jpg
a.
mc063-2.jpg
c.
mc063-4.jpg
b.
mc063-3.jpg
d.
mc063-5.jpg
 

 64. 

mc064-1.jpg
a.
mc064-2.jpg
c.
mc064-4.jpg
b.
mc064-3.jpg
d.
mc064-5.jpg
 

 65. 

Use a vertical format to find the product sa065-1.jpg.
 

 66. 

Graph the parabola: mc066-1.jpg
a.
mc066-2.jpg
c.
mc066-4.jpg
b.
mc066-3.jpg
d.
mc066-5.jpg
 

 67. 

A rental car agency charges $15 per day plus 11 cents per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. How many miles will have to be driven for the cost of a car from the first agency to equal the cost of a car from the second agency? Express the problems as a system of linear equations and solve using the method of your choice.
 

 68. 

Graph the solution set of the system of inequalities: sa068-1.jpg
 

 69. 

Sketch the graph of the equation mc069-1.jpg
a.
mc069-2.jpg
c.
mc069-4.jpg
b.
mc069-3.jpg
d.
mc069-5.jpg
 
 
Graph:
 

 70. 

mc070-1.jpg
a.
mc070-2.jpg
c.
mc070-4.jpg
b.
mc070-3.jpg
d.
mc070-5.jpg
 

 71. 

Find the sum sa071-1.jpg + sa071-2.jpg
 

 72. 

The mass of a boulder is about 106 grams. The mass of a pebble is about 10 grams. The mass of the boulder is about how many times the mass of the pebble?
 

 73. 

Marc sold 461 tickets for the school play. Student tickets cost $3 and adult tickets cost $4. Marc's sales totaled $1624. How many adult tickets and how many student tickets did Marc sell?
a.
241 adult, 220 student
c.
225 adult, 236 student
b.
220 adult, 241 student
d.
236 adult, 225 student
 

 74. 

The number of new cars purchased in a city can be modeled by the equation mc074-1.jpg where C is the number of new cars and t is the number of years since 1958. In what year will the number of new cars reach 15,000?
a.
1970
b.
1993
c.
1976
d.
2026
 

 75. 

A chemistry teacher needs 2.5 liters of a sulfuric acid solution that is 20% sulfuric acid and 80% water. He has 2 liters of a 15% sulfuric acid solution left over from earlier laboratory exercises. He also has 4 liters of a 50% solution. Let x represent the number of liters of the 15% solution that can be mixed with y liters of the 50% solution to make 2.5 liters of the needed 20% solution. Write a system of equations that could be solved to find the amounts of the 15% and 50% solutions that could be mixed to get the required solution.
a.
mc075-1.jpg
c.
mc075-3.jpg
b.
mc075-2.jpg
d.
mc075-4.jpg
 

 76. 

A group of 52 people attend a ball game. There were three times as many children as adults in the group. Write a system of equations that you could use to solve this problem, where a is the number of adults and c is the number of children in the group.
Solve the system of equations for c, the number of children in the group.
 
 
Simplify:
 

 77. 

mc077-1.jpg
a.
36
b.
14
c.
252
d.
20
 

 78. 

mc078-1.jpg
a.
mc078-2.jpg
b.
mc078-3.jpg
c.
mc078-4.jpg
d.
mc078-5.jpg
 

 79. 

Suppose a particle has a mass of sa079-1.jpg kilogram. What would the mass of 109 of these particles be?
 

 80. 

If one micrometer is sa080-1.jpg meter, how many micrometers are in 103 meters?
 

 81. 

The owner of a restaurant determines she can spend no more than $1600 to buy coffee for the next month. At wholesale prices, the regular coffee she uses costs $4.50 per pound and the decaffeinated coffee costs $6.00 per pound. The owner estimates she will need at least 60 pounds of coffee for the month. Which graph represents the possible combinations of the number of pounds of regular coffee, x, and the number of pounds of decaffeinated coffee, y, that meet these conditions?
a.

mc081-1.jpg
c.

mc081-3.jpg
b.

mc081-2.jpg
d.

mc081-4.jpg
 

 82. 

Find the coordinates of the vertex and determine whether the graph opens up or down. sa082-1.jpg
 

 83. 

If the perimeter of the figure below is 20 feet, what is the area of the figure?
  
mc083-1.jpg
 



mc083-2.jpg


 

mc083-3.jpg
 
  




mc083-4.jpg
a.
18 ft2
c.
123 ft2
b.
9 ft2
d.
120 ft2
 

 84. 

A board of length mc084-1.jpg cm was cut into two pieces. If one piece is mc084-2.jpg cm, express the length of the other board as a rational expression.
a.
mc084-3.jpg
c.
mc084-5.jpg
b.
mc084-4.jpg
d.
mc084-6.jpg
 

 85. 

Divide mc085-1.jpg by mc085-2.jpg.
a.
mc085-3.jpg
c.
mc085-5.jpg
b.
mc085-4.jpg
d.
mc085-6.jpg
 
 
Find the excluded values, if any, of the expression.
 

 86. 

sa086-1.jpg
 
 
Solve the quadratic equation.
 

 87. 

mc087-1.jpg
a.
mc087-2.jpg
c.
mc087-4.jpg
b.
mc087-3.jpg
d.
mc087-5.jpg
 

 88. 

When does the equation mc088-1.jpg have no solutions?
a.
when d < 0
b.
never
c.
always
d.
when d > 0
 
 
Use the quadratic formula to solve the equation.
 

 89. 

mc089-1.jpg
a.
mc089-2.jpg, mc089-3.jpg
c.
mc089-6.jpg, mc089-7.jpg
b.
mc089-4.jpg, mc089-5.jpg
d.
mc089-8.jpg, mc089-9.jpg
 

 90. 

Use the FOIL pattern to find the product (x – 3)(3x + 5).
 
 
Find the quotient.
 

 91. 

mc091-1.jpg ¸ mc091-2.jpg
a.
mc091-3.jpg
c.
mc091-5.jpg
b.
mc091-4.jpg
d.
mc091-6.jpg
 

 92. 

Use elimination to solve the linear system.
  sa092-1.jpg
sa092-2.jpg
 
 
Solve by elimination:
 

 93. 

sa093-1.jpg
 

 94. 

mc094-1.jpg
a.
(5, –1)
b.
(0, mc094-2.jpg)
c.
(10, mc094-3.jpg)
d.
no solution
 
 
Find the sum.
 

 95. 

sa095-1.jpg
 

 96. 

sa096-1.jpg
 

 97. 

mc097-1.jpg
a.
mc097-2.jpg
c.
mc097-4.jpg
b.
mc097-3.jpg
d.
mc097-5.jpg
 
 
Solve the equation and check your answer.
 

 98. 

mc098-1.jpg
a.
8
b.
no solution
c.
–8
d.
7
 

 99. 

mc099-1.jpg
a.
20
b.
8
c.
24
d.
27
 
 
Find the difference.
 

 100. 

mc100-1.jpg
a.
mc100-2.jpg
c.
mc100-4.jpg
b.
mc100-3.jpg
d.
mc100-5.jpg
 

 101. 

mc101-1.jpg
a.
mc101-2.jpg
c.
mc101-4.jpg
b.
mc101-3.jpg
d.
mc101-5.jpg
 

 102. 

mc102-1.jpg
a.
mc102-2.jpg
c.
mc102-4.jpg
b.
mc102-3.jpg
d.
mc102-5.jpg
 

 103. 

A rectangle has length sa103-1.jpg and width sa103-2.jpg. Write an equation that represents the area, A, of the rectangle in terms of x.
 

 104. 

Simplify the expression sa104-1.jpg
 
 
Solve the equation.
 

 105. 

sa105-1.jpg
 

 106. 

sa106-1.jpg
 

 107. 

sa107-1.jpg
 

 108. 

sa108-1.jpg
 

 109. 

mc109-1.jpg = 0
a.
mc109-2.jpg
b.
mc109-3.jpg
c.
mc109-4.jpg
d.
mc109-5.jpg
 

 110. 

Simplify the expression sa110-1.jpg
 

 111. 

Evaluate sa111-1.jpg.
 

 112. 

Rewrite the expression using positive exponents. sa112-1.jpg
 
 
Determine the number of solutions of the equation.
 

 113. 

mc113-1.jpg
a.
1
b.
0
c.
2
d.
3
 

 114. 

Which of the following is equal to 1 when multiplied by mc114-1.jpg?
a.
mc114-2.jpg
b.
mc114-3.jpg
c.
mc114-4.jpg
d.
mc114-5.jpg
 
 
Use your calculator as needed.
 

 115. 

Solve the proportion sa115-1.jpg
 

 116. 

Solve the proportion sa116-1.jpg
 

 117. 

Find the degree of the polynomial mc117-1.jpg.
a.
1
c.
6
b.
4
d.
7
 

 118. 

Write mc118-1.jpg × mc118-2.jpg using positive exponents.
a.
mc118-3.jpg
b.
mc118-4.jpg
c.
mc118-5.jpg
d.
mc118-6.jpg
 

 119. 

Which expression is a polynomial?
a.
mc119-1.jpg
c.
mc119-3.jpg
b.
mc119-2.jpg
d.
mc119-4.jpg
 

 120. 

Write a system of linear inequalities that defines the shaded region.
sa120-1.jpg
 

 121. 

How would the graph of the function sa121-1.jpg be affected if the function were changed to sa121-2.jpg?
 

 122. 

Find the sum sa122-1.jpg + sa122-2.jpg
 

 123. 

A salesman at a new car dealership gets paid a fixed commission above his base salary for any passenger car he sells and a different fixed commission for any sport utility vehicle he sells. In August, he sold 5 passenger cars and 5 sport utility vehicles and earned more than $2500 above his base salary. In September, he sold 8 passenger cars and 3 sport utility vehicles and earned less than $3000 above his base salary.
This information can be represented by the following inequalities and their graph, where p represents the number of passenger cars sold and s represents the number of sport utility vehicles sold.
mc123-1.jpg
mc123-2.jpg

Which region of the graph represents the possible commissions paid to the salesman for the two types of vehicles?
a.
B
b.
D
c.
A
d.
C
 

 124. 

Sketch a graph of sa124-1.jpg. Include any vertical or horizontal asymptotes.
 

 125. 

Classify the expression mc125-1.jpg and state its degree.
a.
binomial, 10
c.
trinomial, 10
b.
binomial, 9
d.
trinomial, 9
 

 126. 

The production rate of a small factory is modeled by mc126-1.jpg, while the production rate of another factory is modeled by mc126-2.jpg. Which is a model for the combined production rate of the two factories?
a.
mc126-3.jpg
c.
mc126-5.jpg
b.
mc126-4.jpg
d.
mc126-6.jpg
 

 127. 

Solve the system by adding or subtracting.
sa127-1.jpg
 

 128. 

The table below shows the costs of two different combinations of hot dogs and sodas at a ballgame. What is the cost h of one hot dog and the cost s of one soda?

Number of hot dogs
Number of sodas
Total Cost
4
4
$20
4
6
$24
 

 129. 

How would the graph of the function sa129-1.jpg be affected if the function were changed to sa129-2.jpg?
 

 130. 

Write a variable expression for the area of the shape shown, which is made with sa130-1.jpg.

sa130-2.jpg
 

 131. 

Which expression is equivalent to mc131-1.jpg
a.
mc131-2.jpg
b.
mc131-3.jpg
c.
mc131-4.jpg
d.
mc131-5.jpg
 
 
Solve the equation:
 

 132. 

mc132-1.jpg
a.
mc132-2.jpg
c.
mc132-3.jpg
b.
none of these
d.
mc132-4.jpg
 

 133. 

sa133-1.jpg
 

 134. 

mc134-1.jpg
a.
mc134-2.jpg
c.
mc134-4.jpg
b.
mc134-3.jpg
d.
mc134-5.jpg
 

 135. 

Write the polynomial so that the exponents decrease from left to right.
mc135-1.jpg
a.
mc135-2.jpg
c.
mc135-4.jpg
b.
mc135-3.jpg
d.
mc135-5.jpg
 
 
Divide:
 

 136. 

mc136-1.jpg
a.
mc136-2.jpg
c.
mc136-4.jpg
b.
mc136-3.jpg
d.
mc136-5.jpg
 

 137. 

mc137-1.jpg
a.
mc137-2.jpg remainder -11
c.
mc137-4.jpg remainder 11
b.
mc137-3.jpg remainder 49
d.
mc137-5.jpg remainder -1
 

 138. 

Graph the solution set of the system of inequalities:
mc138-1.jpg
a.
mc138-2.jpg
c.
mc138-4.jpg
b.
mc138-3.jpg
d.
mc138-5.jpg
 
 
Find the zeros of the function.
 

 139. 

sa139-1.jpg
 

 140. 

A rectangle has a length of mc140-1.jpg and a width of mc140-2.jpg. Write an equation that describes the area, A, of the rectangle in terms of x.
a.
mc140-3.jpg
c.
mc140-5.jpg
b.
mc140-4.jpg
d.
mc140-6.jpg
 

 141. 

Graph sa141-1.jpg. Give the vertex and the line of symmetry.
sa141-2.jpg
 

 142. 

The volume of a cylinder is given by the formula mc142-1.jpg where r is the radius of the base of the cylinder and h is the height of the cylinder. If the radius of the cylinder is increased by 1 unit and the height remains the same, the ratio for the volume of the new cylinder to the volume of the original cylinder is 4:1. Find the length of the radius of the original cylinder.
a.
1 unit
c.
3 units
b.
2 units
d.
4 units
 

 143. 

Tell whether the equation has two solutions, one solution, or no solution. mc143-1.jpg
a.
two solutions
c.
not enough information
b.
one solution
d.
no solutions
 
 
Divide:
 

 144. 

sa144-1.jpg
 

 145. 

sa145-1.jpg
 

 146. 

mc146-1.jpg
a.
mc146-2.jpg
c.
mc146-4.jpg
b.
mc146-3.jpg
d.
mc146-5.jpg
 
 
Solve the system of inequalities graphically:
 

 147. 

mc147-1.jpg
a.

mc147-2.jpg
c.

mc147-4.jpg
b.

mc147-3.jpg
d.

mc147-5.jpg
 
 
Find the product.
 

 148. 

sa148-1.jpg
 

 149. 

sa149-1.jpg
 

 150. 

mc150-1.jpg
a.
mc150-2.jpg
c.
mc150-4.jpg
b.
mc150-3.jpg
d.
mc150-5.jpg
 

 151. 

mc151-1.jpg
a.
12y
c.
mc151-3.jpgy2
b.
mc151-2.jpg
d.
y
 

 152. 

Solve the system using the addition method:
mc152-1.jpg
a.
mc152-2.jpg
b.
no solution
c.
mc152-3.jpg
d.
mc152-4.jpg
 

 153. 

Graph the system of linear inequalities.
y ³ –2x +3
y £ –3
 
 
Solve the equation by graphing.
 

 154. 

sa154-1.jpg
sa154-2.jpg
 

 155. 

Evaluate the expression sa155-1.jpg.
 

 156. 

Find the difference sa156-1.jpg
 

 157. 

Simplify the expression sa157-1.jpg
 

 158. 

Solve the system by substitution:
mc158-1.jpg
a.
mc158-2.jpg
b.
mc158-3.jpg
c.
mc158-4.jpg
d.
mc158-5.jpg
 
 
Graph:
 

 159. 

mc159-1.jpg
a.
mc159-2.jpg
c.
mc159-4.jpg
b.
mc159-3.jpg
d.
mc159-5.jpg
 
 
An object is dropped from an initial height of s feet. The object's height at any time t, in seconds, is given by nar027-1.jpg.
 

 160. 

How long does it take for an object dropped from 200 feet to hit the ground? Round your result to two decimal places.
 

 161. 

Predict how the graph of the equation sa161-1.jpg will compare with the graph of the equation sa161-2.jpg
 
 
Which ordered pair is a solution to the system of equations?
 

 162. 

mc162-1.jpg
a.
mc162-2.jpg
c.
mc162-4.jpg
b.
mc162-3.jpg
d.
mc162-5.jpg
 

 163. 

The Modern Grocery has cashews that sell for $4.00 a pound and peanuts that sell for $2.50 a pound. How much of each must Albert, the grocer, mix to get 60 pounds of mixture that he can sell for $3.00 per pound? Express the problem as a system of linear equations and solve using the method of your choice.
 

 164. 

Simplify sa164-1.jpg. State the excluded values.
 

 165. 

Graph mc165-1.jpg.
a.
mc165-2.jpg
c.
mc165-4.jpg
b.
mc165-3.jpg
d.
mc165-5.jpg
 
 
Graph the function.
 

 166. 

sa166-1.jpg
 

 167. 

sa167-1.jpg
 
 
Simplify the expression.
 

 168. 

sa168-1.jpg
 

 169. 

mc169-1.jpg
a.
mc169-2.jpg
c.
mc169-4.jpg
b.
mc169-3.jpg
d.
mc169-5.jpg
 

 170. 

How would you change the graph of mc170-1.jpg to produce the graph of mc170-2.jpg?
a.
shift the graph of mc170-3.jpg right 5 units
b.
shift the graph of mc170-4.jpg up 5 units
c.
shift the graph of mc170-5.jpg left 5 units
d.
shift the graph of mc170-6.jpg down 5 units
 

 171. 

Mr. Jarvis invested a total of $9,112 in two savings accounts. One account earns 7.5% simple interest per year and the other earns 8.5% simple interest per year. Last year, the two investments earned a total of $884.88 in interest. Write a system of equations that could be used to determine the amount Mr. Jarvis initially invested in each account. Let x represent the amount invested at 7.5% and let y represent the amount invested at 8.5%.
a.
mc171-1.jpg
c.
mc171-3.jpg
b.
mc171-2.jpg
d.
mc171-4.jpg
 

 172. 

A college student decides that school work limits him to a total of no more than 32 hours per week at his two part-time jobs. He earns $10 per hour hanging wall paper and he has a sales job that pays $6 per hour. He needs to earn at least $269 per week to cover his expenses. Write a system of inequalities that shows the various numbers of hours he can work at each job. Let h represent the number of hours spent hanging wall paper and let s represent the number of hours spent working at the sales job.
 

 173. 

A total of $10,000 is invested in two funds paying 5% and 7% annual interest. The combined annual interest is $630. How much of the $10,000 is invested in each fund?
 

 174. 

Sketch the graph of the equation mc174-1.jpg
a.
mc174-2.jpg
c.
mc174-4.jpg
b.
mc174-3.jpg
d.
mc174-5.jpg
 

 175. 

It costs $9 to buy 3 containers of orange juice and 2 containers of milk. To buy 9 containers of orange juice and 6 containers of milk, it costs $27. Find the cost of one container of orange juice.
 

 176. 

Find the sum sa176-1.jpg + sa176-2.jpg
 

 177. 

Which expression is NOT a polynomial?
a.
mc177-1.jpg
c.
mc177-3.jpg
b.
mc177-2.jpg
d.
mc177-4.jpg
 
 
Write an equation that can be used to solve the problem. Solve the equation and answer the question.
 

 178. 

A sight-seeing boat travels at an average speed of 19 miles per hour in the calm water of a large lake. The same boat is used for sight-seeing in a nearby river. In the river, the boat travels 2.9 miles downstream (with the current) in the same amount of time it takes to travel 1.6 miles upstream (against the current). Find the current of the river.
a.
mc178-1.jpg; about 5.49 mi/h
c.
mc178-3.jpg; about 5.49 mi/h
b.
mc178-2.jpg; about 4.9 mi/h
d.
mc178-4.jpg; about 4.9 mi/h
 

 179. 

During the years 1992 through 1996, the average number of green grapes, g, sold at a farmer's market can be modeled by g = –0.14mc179-1.jpg + 1.4t + 46.62. The average number of red grapes, r, sold by the farmer's market can be modeled by mc179-2.jpg. Determine the model representing the total number of grapes, n, sold from 1992 through 1996.
a.
n = mc179-3.jpg
b.
n = mc179-4.jpg
c.
n = mc179-5.jpg
d.
n = mc179-6.jpg
 

 180. 

Rewrite the expression using positive exponents. sa180-1.jpg
 
 
Graph the function. Compare the graph with the graph of nar021-1.jpg.
 

 181. 

sa181-1.jpg
 

 182. 

Solve the linear system by any method.
sa182-1.jpg
 

 183. 

A square bird sanctuary has sides that are sa183-1.jpg long. Write expressions for its perimeter and area.
 
 
Simplify. Leave your answer in exponential form.
 

 184. 

mc184-1.jpg ´ mc184-2.jpg
a.
mc184-3.jpg
b.
mc184-4.jpg
c.
mc184-5.jpg
d.
mc184-6.jpg
 

 185. 

How would the graph of the function sa185-1.jpg be affected if the function were changed to sa185-2.jpg?
 

 186. 

Use elimination to solve the linear system.
sa186-1.jpg
 

 187. 

Solve the equation sa187-1.jpg
 

 188. 

Find the coordinates of the vertex and determine whether the graph opens up or down. sa188-1.jpg
 

 189. 

How would you shift the graph of sa189-1.jpg to produce the graph of sa189-2.jpg?
 
 
Describe how the graph of the function compares to the graph of
y = x2.
 

 190. 

sa190-1.jpg
 

 191. 

Solve by substitution:
mc191-1.jpg
a.
mc191-2.jpg
b.
(–1, mc191-3.jpg)
c.
mc191-4.jpg
d.
no solution
 

 192. 

Predict how the graph of the equation mc192-1.jpg will compare with the graph of the equation mc192-2.jpg
a.
The graph of mc192-3.jpg will open up because the coefficient is positive. The graph will be wider because 7 is greater than 1.
b.
The graph of mc192-4.jpg will open down because coefficient is positive. The graph will be narrower because 7 is greater than 1.
c.
The graph of mc192-5.jpg will open up because the coefficient is positive. The graph will be narrower because 7 is greater than 1.
d.
The graph of mc192-6.jpg will open down because coefficient is positive. The graph will be wider because 7 is greater than 1.
 

 193. 

Describe the most efficient method to solve the quadratic equation: mc193-1.jpg
a.
The square root method
b.
mc193-2.jpgmc193-3.jpg
c.
Factoring and the zero-product principle
d.
The quadratic formula
 
 
Solve the equation.
 

 194. 

mc194-1.jpg
a.
mc194-2.jpg
c.
mc194-4.jpg
b.
mc194-3.jpg
d.
mc194-5.jpg
 

 195. 

The equation sa195-1.jpg gives the height h, in feet, of a football as a function of time t, in seconds, after it is kicked. How long does it take for the football to hit the ground?
 

 196. 

Write a variable expression for the area of the rectangle.

mc196-1.jpg
a.
mc196-2.jpg
c.
mc196-4.jpg
b.
mc196-3.jpg
d.
mc196-5.jpg
 



 
Check Your Work     Start Over