Download 1. The area of a square garden is 216. What is the

1. The area of a square garden is 216. What is the length of each side as a decimal to the
nearest tenth?
A
14.7*
B
14.6
C
14.69
D
14.696
2. What is the square root of 6 to the nearest tenth?
A
2
B
2.4 *
C
2.5
D
3
3. The diagonal of a square is 499 . How long is it to the nearest tenth?
A
73
B
22
C
22.3*
D
73.0
4. Find the square root to the nearest tenth:
A
B
C
D
528
22
22.9
23
23.0*
5. Write in scientific notation: (3.7 x 107)(7.4 x 103)
A
27.38 x 1021
B
11.1 x 1021
C
2.738 x 1011 *
D
1.11 x 1011
6. Write in scientific notation: (5.6 x 10 -5)4
A
5.6 x 10-1
B
5.6 x 10-20
C
983.4 x 10-20
D
9.834 x 10-18 *
(6.8 108 )
(1.7 102 )
4.0 x 104
4.0 x 106 *
5.1 x 106
5.1 x 104
7. Simplify:
A
B
C
D
4
8. A large rectangular playground has a perimeter of 1.6 10 meters. If the length is
1.2 104 meters, what is the width?
A
B
1.418 10 3
7.09 10 3 *
C
D
1.418 10 4
7.09 10 4
9. Simplify:
6
20
A
2
3–2 5
B
3 – 10
C
D
3–2 4
3 – 5*
10. What is a completely simplified expression for
A
2 128
B
C
D
20 112
16 2 *
256 2
11. Simplify:
A
B
C
D
27
28
9 3
4 7
3 21
*
14
3
3
7
2
3
3
2
7
12. A small square computer chip has an area of
chip?
A
B
C
D
512 ?
1
8 inch
1
4 inch *
1
2 inches
3
4 inches
1
inch. What is the length of one side of the
16
13. Find the greatest common factor and the least common multiple for 15 and 35.
A
5, 105 *
B
15, 525
C
5, 525
D
15, 105
14. What is the greatest common factor for 55, 33, and 132?
A
1,815
B
660
C
33
D
11*
15. Find the least common multiple of 16, 32, 88?
A
2
B
16
C
352*
D
512
16. What is the greatest common factor for these terms: 15a2bc2 ,9ab2c2 ,6a2b2c2 ?
A
3abc
B
3abc2 *
C
15a2b2c2
D
3a2b2c2
17. What is the greatest common monomial factor of 8x2 y 3 z 4 12 xy 2 z 3 16 x3 yz 2 ?
A
8xyz
B
16x3 y 2
C
4xyz 2 *
D
2x 2 yz 2
18. Which of the following number lines shows the correct position of 5 ?
A
B
C
D
*
19. Which number line shows – 3 ,
2 , and 10 in their correct positions on the number line?
A
B
*
C
D
20. Which number is graphed on the number line below?
A
2 3
B
C
D
12 *
2 2
7
M11.A.1.3.2 Compare and/or order any real numbers (rational and irrational may be mixed).
21. Which list shows the temperatures in January in order from coldest to warmest?
A
0 F, –3 F, –3.2 F, 15 F
B
–3 F, –3.2 F, 0 F, 15 F
C
–3.2 F, –3 F, 0 F, 15 F *
D
15 F, –3.2 F, –3 F, 0 F
22. Which list shows the numbers in order from greatest to least?
53
26 , 5.2,
A
, 2 6
10
53
B
5.2, 2 6 , 26 ,
10
53
2 6 , 26 , 5.2,
C
10
53
D
, 5.2, 26 , 2 6 *
10
23. A group of painters can paint ½ a room in 2 hours. They work 8 hours a day. At this rate,
how many days will it take them to paint a building with 16 rooms in it?
A
16 days
B
8 days *
C
4 days
D
2 days
24. Jon has a job mowing lawns. He can mow 4 lawns in an hour and gets paid $8.00 an hour.
How many lawns does he have to mow to get $40.00?
A
10 lawns
B
20 lawns *
C
40 lawns
D
80 lawns
25. Kaylie bought a car for $6,000. If the sales tax is 7.5%, how much tax will she have to pay?
A
$80,000.00
B
$45,000.00
C
$800.00
D
$450.00 *
26. Louise bought a shirt on sale. The original price was $45.00, but she only paid $31.50. What
percent did she save?
A
30% *
B
70%
C
.3%
D
7%
27. Your weight M on the moon varies directly with your weight E on Earth. If you weigh 120
pounds on Earth, you would weigh 20 pounds on the moon. Which equation relates E and M?
A
20M = 120E
6
B
M= E
http://www.exploratorium.edu/ronh/
1
weight/index.html
C
M = E – 100
1
D
M= E*
6
28. The variable x and y vary inversely. If x = 10 and y = 2, which equation represents the
relationship?
20
y
A
*
x
x
y
B
20
C
y = 20x
D
y = 2x
29. A company is selling plant bulbs with a mix of crocuses and tulips in the ratio of 7 to 5. If
there are a total of 120 bulbs per package, how many of each type of bulb is in a package?
A
50 crocuses, 70 tulips
B
C
D
70 crocuses, 50 tulips *
96 crocuses, 24 tulips
24 crocuses, 96 tulips
30. Let x vary inversely with y and directly with z. Which equation represents this relationship?
z
A
y=
x
y
B
x= z
a
x
C
y=
z
a
D
x= z*
y
31. Marcos wants to build a scale model of his house for his little sister to play with. He wants
the scale to be 1:20. If his house is 60 ft x 40 ft x 30 ft, what should the dimensions of the
dollhouse be?
A
3 ft x 2 ft x 1.5 ft *
B
40 ft x 20 ft x 10 ft
C
6 ft x 4 ft x 3 ft
D
20 ft x 20 ft x 20 ft
32. In Suffolk County, the property tax rate is $26.78 per $1500 of assessed value. If a house
and property have a value of $256,000, which expression shows how much the owner has to
pay?
$1500
x
A
$26.78 $256,000
$26.78 $256,000
B
*
$1500
x
$26.78
x
C
$1500 $256,000
$256,000 $26.78
D
$1500
x
33. If 432 cups of coffee can be made from 9 pounds of coffee, how many cups can be made
from 6 pounds of coffee?
A
648
B
576
C
288 *
D
144
34. Bob drove 250 miles to visit Serena. On the way home, he found a route that was only 225
miles, but traffic slowed his speed by 5 miles per hour. If the two trips took exactly the same
amount of time, what was his rate each way?
A
50 mi/h, 45 mi/h *
B
45 mi/h, 50 mi/h
C
50 mi/h, 55 mi/h
D
50 mi/h, 50 mi/h
35. Evaluate the power: (–4)6
A
–24
B
–4096
C
24
D
4096*
(Lesson 1.2, p.13, prob. 4–15)
36. What is the value of 5–7?
1
A
*
78125
1
B
–
78125
C
–78125
D
78125
37. Multiply: 36
A
3–12
B
94
C
34 *
D
3–3
3–2
3
38. What is the value of 252 ?
A
8.66
B
37.5
C
125 *
D
7812.5
39. Simplify: 2 9
A
–7
B
7*
C
–11
D
11
40. Multiply: r 2 s r 3s5 rs4
A
r 6 s 20
B
r 6 s10 *
C
rs16
D
rs120
41. What is the simplified form of
A
B
x15 y 6
*
z12
x8 y 6
z7
x5 y 2
z4
3
?
C
D
x2 y 1
z1
3x5 3 y 2
3z 4
42. Simplify the expression: 5(3ab)3
A
B
C
D
45a3b3
15a3b3
15ab3
135a3b3 *
6
43. Assuming all variables are positive, what is the simplified form of
6
A
x
x4
9 x4
?
x
*
3
x5
3x 2
12
B
8
C
D
x5
3x2
7x
3
5
44. Assuming all variables are positive, which expression is the simplest form of
A
y14
25 y 2
B
y 2 15 y14
5
y3
3
y7
25 y 4
?
15
15
C
y14
*
5
y10
5 y2
15
D
45. Solve the equation x 3
7 x 29 . Show how to check for extraneous roots.
[Ans: Possible solutions are –4 and 5. Substituting –4 into the original equation gives –1 is equal
to 1 which is false. Therefore, –4 is not a solution. Substituting 5 into the equation yields a true
equation. Therefore, 5 is the only solution.]
46. What is the value of 2
A
B
18
16 *
3 5 1?
C
D
6
6
2
47. Simplify: 2 3
2
A
10 *
B
14
C
32
D
4
48. Evaluate 9n (5n 4)3 when n = 2.
A
–36
B
16
C
234 *
D
13824
49. What is the value of k 12k 3 4k when k = 3.
1
A
–4
3
B
1
C
3*
D
9
50. Estimate the coordinates of each turning point on the graph below:
[Production: graph is f ( x) (x+2)(x 1)2
A
(1,–2),(–1,–6)
B
(–1,2),(1,6)
C
(2,1),(6,–1)
D
(1,2),(–1,6)*
2]
51. Estimate the coordinates of each turning point on the graph below:
[Production: graph is f ( x)
A
B
C
D
1
( x 4)2 ( x 1) 2
5
7]
3 3
, ),(4,–7) *
2 4
(–2,0),(1,0),(2,0),(5,0)
3 3
(–7,–1),( , )(–7,4)
4 2
(0–2),(0,1),(0,2),(0,5)
(–1,–7),(
52. What is the length of the diagonal of a rectangle with a length of 10 inches and a width of 24
inches?
A
34 in.
B
13 in.
C
5 19 in.
D
26 in. *
53. What is the value of d?
d
24 cm
45 cm
A
B
C
69 cm
51 cm *
3 161 cm
D
69 cm
54. A solar collector and its stand are in the shape of a right triangle. The collector is 5.00 m
long, the upright leg is 3.00 m long, and the base leg is 4.00 m long. Due to inefficiencies in the
collector’s position, it needs to be raised by 0.50 m on the upright leg. How long will the new
base leg be?
A
5.3 m
B
4.6 m
C
4.5 m
D
3.6 m *
55. What is the value of x?
16 in.
7 in.
x
A
B
C
D
207 in.
3 23 in. *
3 in.
9 in.
56. What is the distance between (6,5) and (–2,8)?
A
5
B
17
C
185
D
73 *
57. What is the midpoint of (3,–2) and (5,6)?
A
(1,11)
B
(4,2)*
C
(9,3)
D
(–1,–4)
58. Molly and Joe live in different towns. Molly lives at (12,20) on a map, and Joe lives at (–2,5).
If they want to meet up in the middle, about how far does each have to drive?
A
10.3 miles *
B
13.5 miles
C
20.5 miles
D
26.9 miles
59. Todd lives at (13,23) on a map. Liz lives at (5,–7). If Jill lives exactly halfway between them,
where does she live?
A
(8,15)
B
(8,30)
C
(9,15)
D
(9,8) *
60. Look for a pattern in the table. What equation represents the table?
x
1
2
3
4
5
6
y
5
7
9
11
13
15
A
y 2( x 3)
B
y 2x 3 *
C
D
y 2x 3
y 3x 2
61. Look at the table below.
x
y
1
–11
2
–7
3
–3
4
1
5
5
6
9
(a) Write an equation to fit the data. [Ans.: y 4x 15 ]
(b) Draw a graph of the line.
(c) What will y be when x is 10?
62. The relation given by the ordered pairs
2, 3 , 6, 1 , 4, 8 , and 0, 3 is a function.
Which ordered pair could be included in this relation so that it is still a function?
A
0, 4
B
(6,5)
C
3, 0 *
D
2, 8
63. Which graph represents a relation that is not a function?
[AZ_ALG2_CD_06]
A
B
C *
D
64. The relation given by the ordered pairs 4,7 , 8, 2 , 2, 4 , and 0, 3 is a function.
Which ordered pair would cause this relation to cease being a function?
3, 4
A
B
12, 5
C
10, 0
D
2, 8 *
65. Which relation below is a function?
A
(4,3),(3,2),( 2, 3),(0,2) *
B
(4, 3),(3,2),( 2, 3),( 2,2)
C
(3, 3),(3,2),( 2, 3),( 2,2)
D
(2, 3),(3,4),(2, 3),( 4,2)
66. What is the domain of the relation
A
B
C
D
5, 2 ,
3, 7 ,
1, 1 , and 5, 8 ?
3, 4, 0, 13
5, 3, 1, 5 *
1, 2, 7, 8
3, 1, 7, 6
67. What is the range of the relation 5, 10 , 15, 25 , 30, 40 , and 45, 80 ?
A
B
5, 15, 30, 45
10, 25, 40, 80 *
5, 10, 15, 25
30, 40, 45, 80
C
D
68. What is the domain of the function graphed below?
[AZ_ALG2_CD_07]
x 0
A
x 3
B
x 3
C
D
All real numbers *
69. What is the range of the function graphed below?
[AZ_ALG2_CD_08]
y 0 *
y 1
y 1
A
B
C
D
All real numbers
70. Which table represents points in the inverse of the function y
A
x
1
2
3
4
y
6
3
0
–3
B
x
y
C
x
y
D
x
y
3x 9 ?
*
1
8
3
2
7
3
3
2
4
5
3
1
–6
2
–3
3
0
4
3
1
1
6
2
1
3
3
0
4
1
3
71. Given the function f x
1 2
x .
3
a. What is the inverse of this function?
[Ans: y
3x ]
b. Show that the given function and your answer to part a are inverse functions. Explain.
[Ans: The functions are inverses if f
f x
y
2
1
3x ; f x
3
f
1
x
x and f
1
3 x which is equal to x. And f
3
1
1
f x
x . So, f f
f x
x; y
3
1
x
x;
1 2
x ;
3
x 2 which is equal to x.]
72. Which inequality is represented by the graph?
A
B
C
D
x 4 or
2 x
x 4 or
4 x
x
4
x
2
2*
2
73. Which graph below represents 1 x 2 ?
A
B
*
C
D
74. Solve: 8 3x 4 7
4
10
A
x
3
3
B
4 x 1
4
10
C
x
3
3
D
4 x 1*
75. Solve: 2 x 1 3 or 5
A
B
C
D
1
x 8
2
x 2 or x 6 *
2 x 6
3
x 2 or x
2
2 x 6
M11.D.2.1.2 Identify or graph functions, linear equations or linear inequalities on a coordinate plane.
76. What is the equation of the graph?
[AZ_ALG2_CD_23]
A
4x
B
x y 4
x 4y 4 *
x 4y 16
C
D
y 1
77. Which equation represents the graph?
[AZ_ALG2_CD_09]
A
y 2x
B
x 2y
C
y
x
D
2x
2y
78. Which equation represents the graph?
[AZ_ALG2_CD_10]
B
x
x
y
y
C
x
y 2
D
x
y 2
A
2 *
2
79. What inequality represents the graph?
[AZ_ALG2_CD_25]
C
x
x
x
y 0 *
y 0
y 0
D
x
y
A
B
0
80. Which equation represents the graph?
A
B
C
D
1
7x 8 1
2
y 7 x 18
y 4x 5
1
y
7x 8 1*
2
y
81. What is the value of m in the equation:
4 *
A
B
C
D
m
25 ?
20
7
30
7
4
82. What is the value of r in the equation:
A
B
C
D
6m 5
2r 3
r 4r 7 ?
34
22
22 *
34
1
k
83. What is the value of k in the equation: 5
10
3
A
1
3
B
10
7
C
10
3 *
D
1
k
2
1
?
84. You own a catering business and it takes you 3 hours to do the prep work for an event. It
1 1
takes your friend 5 hours to complete the prep work for the same event. The equation 3 5
is used to find the amount of time it will take to do the prep work if you and your friend work
together. How long will it you and your friend to complete the prep work? Show your work.
[Ans: The common denominator is 15t. So multiplying both sides by 15t we have,
15t
1 1
3 5
1
15t
t
or 5t 3t 15 . So 8t = 15 and t is about 1.875. It will take you and your
friend about 1.875 hours to complete the prep work.]
85. An order of 12 dozen markers and 5 dozen pencils cost $116. A later order for 8 dozen
markers and 12 dozen pencils cost $112.
(a) Write a system of equations that shows the cost of 1 dozen of each.
[Ans.
12 x 5 y 116
]
8 x 12 y 112
1
t
(b) Solve the equations. How much does 1 dozen of each cost? [Ans. 1 dozen markers: $8; 1
dozen pencils: $4]
5x 2 y
86. What is the solution to the system:
3x 4 y
A
B
C
D
9
5 ?
1
11 1
, )
25 5
2 1
( , )
5 5
1 11
( , )
5 25
1 2
( , )*
5 5
(
87. What system has no solution?
A
x 2y 3
x 2y 0
B
2x y
x 2y
C
D
3
4
x 2y 4
2x 4 y 0 *
2y x 0
2x y 0
88. What is the solution to the system?
[AZ_ALG2_CD_16]
A
1, 0
B
1, 1
C
D
2, 0
No solution
89. Solve by factoring: x2 7 x
A
1, –6
B
1, 6 *
C
–1, –6
D
–1, 6
6.
90. What are the solutions of x in 3x2
A
5, 3
B
5, –3
C
–5, 3
D
–5, –3 *
24x 45 0 ?
91. The profit on a small appliance is given by P x2 3x 60 , where x is the number of
appliances sold per day. How many appliances were sold on a day where there was a $20 loss?
A
8*
B
5
C
4
D
2
92. The length of a rectangle is 2 cm more than 3 times its width. If the area of the rectangle is
33 cm2, what are the dimensions of the rectangle?
2
A
3 cm 3
cm
3
B
1 cm 11 cm
2
C
9 cm 3
cm
3
D
3 cm 11 cm *
93. Find the sum: (4 x 2
A
B
C
D
2 7 x) (5 8 x 6 x 2 )
2 x4 x2 3
10x2 15x 10
2x2 15x 3
2 x2 x 3 *
94. What is the result when x2 5 8x is subtracted from 3x2 8x 7 ?
A
2 x2 12 *
B
2x2 16x 2
C
5x2 16x
D
2x2 3x 1
95. What expression is equivalent to (2x 5 y)(3x 4 y) ?
A
6 x2
20 y 2
B
21x 2 y 28 xy 2
C
5 x 2 14 xy 9 y 2
D
6 x2
23xy 20 y 2 *
96. What is the area of a rectangle with a length of 3a 4b and a width of 9a2 12ab 16b2 ?
A
12a3 12ab 36a2b
B
27a3 36a2b 48ab2 64b3
C
27a3 64b3 *
D
63a3b 84a2b2 112ab3
97. What is the complete factorization of 9 x4 y 2 144 x6 ?
A
(3x 2 y 12 x3 )(3x 2 y 12 x3 )
B
9 x 4 ( y 4 x)( y 4 x) *
C
3x 2 ( y 4 x)( y 4 x)
D
9 x4 ( y 2 16 x 2 )
98. Factor the polynomial completely: 81r 4 s4 16r8 s12
A
(9r 2 s 2 4r 4 s 6 )(9r 2 s 2 4r 4 s 6 )
B
r 2 s 2 (9 4r 2 s 4 )(9 4r 2 s 4 )
C
r 4 s 4 (9 4r 2 s 4 )(9 4r 2 s 4 )
D
r 4 s 4 (9 4r 2 s 4 )(3 2rs 2 )(3 2rs 2 ) *
99. One factor of 6m2 17mn 12n2 is (3m 4n) . What is the other one?
A
(3m 3n)
B
(2m 3n) *
C
(2m 3n)
D
(2m 4n)
100. Factor completely: 8m2 12m 4
A
4(2m 1)(m 1) *
B
(8m 4)(m 1)
C
4(8m 4)(m 1)
D
2(4m 2)(m 1)
101. What is the simplified form of
A
B
C
D
xy 2 y 4 x 8
?
2 y 6 xy 3x
( x 2)( y 4)
( x 2)( y 3)
( x 2)( y 4)
y 3
( y 4)
*
y 3
4( x 2)
3(2 x)
8
102. What is the simplified
x 3
2
5
x 3 x
form of ?
[Ans:
8x
]
7 x 15
103. If
A
B
C
D
y varies directly with x, and y = 54 when x = 6, what is k, the constant of variation?
k = 9*
k = 48
k = 60
k = 324
104. Lee is traveling at a constant rate of 55 miles per hour (mi/h). How far does she travel in 8
h?
A
7 mi
B
47 mi
C
63 mi
D
440 mi *
105. What is the slope of the line containing points with coordinates (–2,3) and (1,–3)?
A
2
B
–2*
C
6
1
D
2
106. An airplane covered 15 miles (mi) of its route while decreasing its altitude by 24,000 ft.
Find the slope of the line of descent that was followed. (1 mi = 5380 ft.) Round to the nearest
hundredth.
[Ans.: –.30]*
107. What is the equation of a line that passes through
y
A
y
B
y
C
y
D
7, 1 and has slope
1
12
x
5
5 *
1
12
x
5
5
12
1
x
5
5
1
1
x
5
5
108. What is an equation of the line?
[AZ_ALG2_CD_15]
A
x
y
2
B
2x
C
x 2y
2 *
4
D
x 2y
2
y
109. What is the equation of a line with slope 0 and y-intercept –4?
A
B
C
D
x
y
x
y
4
4 *
0
0
m
1
5?
110. What is the y-intercept of the line that is parallel to x
3,
5 ?
0,
A
B
2y 1 and passes through
7
2
0, 3
7
2
0,
C
0,
D
*
1
2
111. Marna withdraws $25 from her bank account for spending money. The equation
y
5x 25 represents the amount of money y she has x days after she withdraws the money.
In how many days will she have spent all the money?
A
3 days
B
4 days
C
5 days *
D
6 days
112. The graph of which function is shown?
y
5
x 2
B
y
5
x 2
C
y
5
x
2*
y
5
x
2
A
D
113. The graph of which function is shown?
A
f ( x)
(1.5)
x 5
B
C
D
f ( x)
(1.5) x
5*
f ( x) (1.5)
x
f ( x) (1.5)
( x 5)
5
114. The following data represents the living area (in hundreds of square feet) of a home and
the selling price (in thousands of dollars) of the home. Draw a scatter plot to represent the data.
Living Area
14
36
23
17
17
13
21
25
Selling Price 145
228
150
130
160
114
142
165
*
115. The graph shows a line of best fit drawn for the data in the scatterplot. What is the best prediction of
the value of y when x = 30?
[AZ_ALG2_CD_02]
A
5 *
B
9
C
15
D
25
116. The ages of six students riding a bus are 9, 9, 13, 14, 16, and 17? What is the mean age of
these students?
A
9
B
10.5
C
13 *
D
13.5
117. During a week in February the low temperature in Fargo, North Dakota, was recorded each
day. The results are presented in the table below. Find both the median and the mean for the
set of numbers.
M
T
W
Th
F
Sa
Su
–11 –17 –15 –18 –20
–2
20
[Answer: Median is –15 degrees; mean is –9 degrees.]
118. What is the range for this set of numbers?
1
3 7
–8, – , 2, ,
2
4 8
39
A
40
71
B
*
8
3
C
4
29
4
D
119. Which data set has the greatest range?
A
7, 9, 15, 18, 19
B
17, 18, 24, 28, 39 *
C
50, 52, 57, 58, 61
D
68, 69, 71, 71, 72
120. The data set below gives the number of cars sold at a car dealer over 6 months.
5, 6, 4, 6, 23, 4
(a) Find the mean, median, and mode. [Ans: mean = 8, median = 5.5, modes = 4 and 6]
(b) It is suspected that 23 is an outlier. Calculate the new mean, median, and mode without 23
included. [Ans. : mean = 5, median = 5, modes = 4 and 6]
(c) How did the outlier affect the mean, median, and mode? [Ans.: The mean and the median
decreased when the outlier was removed. It did not affect the mode.]
121. The probability that it will rain on Thursday is 40% and the probability that it will rain on
Friday is 75%. What is the probability of rain on Thursday and Friday?
A
30% *
B
35%
C
58%
D
79%
122. What is P A or B if P A
0 .1
A
0 .3
B
0 .8 *
C
1 .1
D
0.5 , P B
0.6 , and P A and B
0.3 ?
123. The probability that an object thrown at the target will hit the shaded region?
[AZ_ALG2_CD_05]
A
B
C
D
1
4
1
3
1
2
3
4
*
124. In a recent poll, 810 people were asked their opinion about a certain brand of coffee. 450
liked the coffee, 325 did not, and the remainder had no opinion. What is the probability that a
randomly selected person had no opinion?
65
A
162
7
B
*
162
5
C
9
7
D
90
125. What is the number of distinguishable combinations of the letters of the word GREEN?
20
A
60 *
B
120
C
240
D
126. Wilson has 1 quarter, 2 dimes, and 4 pennies in his pocket. What is the number of
distinguishable permutations of the coins in Wilson’s pocket?
105 *
A
210
B
630
C
840
D
127. A furniture store sells a piece of furniture that comes in 4 different types of wood and 3
different sizes. What are the number of different pieces of furniture possible?
6
A
7
B
12 *
C
16
D
128. Event P can happen in 12 ways, event Q can happen in 3 ways, and event R can happen
in 8 ways. How many ways can all events occur?
23
A
46
B
144
C
288 *
D
129. The data in the scatterplot shows the number of oranges y remaining x minutes after a
grocery store opens. Which equation best models the data?
[AZ_ALG2_CD_11]
A
B
y
y
5x 75
2.5x 37.5
C
D
y
y
2.5x 75 *
5x 37.5
130. The graph shows a line of best fit drawn for the data in the scatterplot. What is the best
prediction of the value of y when x = 14?
[AZ_ALG2_CD_01]
A
6
B
10 *
C
14
D
20
131. The graph shows a line of best fit drawn for the data in the scatterplot. What is the best
prediction of the value of y when x = 30?
[AZ_ALG2_CD_02]
A
5 *
B
9
C
15
D
25