DUAL CREDIT ANSWER KEY
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
1466 yards
21 sq. inches
385 miles
tens
hundred thousand
II
IV
I
56 x 22 = 1232 miles
297 9
<
<
>
33
22
18. 2 x 4 y8 23
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
19. 3a 3az 2
4
51.
20. 5 m
52.
53.
54.
55.
16. 5 2
2
17. 2b 2b
4
21.
a.
b.
c.
100, 0, 10.5,
100, 0,
0,
75
,4
25
22. 2 2 3 11
75
,4
25
75
, 4, 6.45
25
6.5 servings / packet
– 3/4
–1
– 28
5
6
3
13
50/17
5x – 7
1/3
(8, 8) (16, 0) (0, 16)
r=9
x = 45
x=4
x = 24
22
10
69
185
20%
30%
.0005
3
– 3/4
2
57. x
2
58. m is undefined; (8, 0) ; no y-intercept
59. m 0; (0, 2) ; no x-intercept
2
; ( 5, 0); (0, 2)
5
60. m
23. 2 32 7
24.
25.
26.
27.
28.
29.
30.
31.
3
x
4
56. y
3
; (4, 0); (0, 3)
4
7 13
61. m
59/8
2/5
1/24
1
10/27
7/8
1/6 cup
62. x = 4
63. y = x + 1
64. y = 7
65. 5,
66.
,
19
8
92.
67. 8,
93.
68.
69.
70.
71.
72.
94.
[2, 6)
(1,2)
No Solution
(6, - 7)
73.
74.
75.
76.
77.
78.
79.
80.
81.
8 ft x 6 ft
11 dimes and 21 nickels
4.5 ft, 9 ft, 10.5 ft
4 cups sugar; 16 cups water
8 3 5
16r s t
a
90.
91.
10
98. 6 x
3
47 3
Q : x2
2x 1
7
102.
2x 2
x2 z5
103.
xy 2 x2 9
w5 z 20
6a 1
a 6a 1
86. 7m
89.
4 y 1
2y 1 2y 1
4 y3
12
88.
97.
x
2
87.
x 1
2x 5 x 1
101.
125b45
x30 y15
x 16
84.
x 4
85.
96.
R:3
a36
82. 3x 4 y 2 10 x7 y
83.
b b 5 b 5
x2 x 8
4x x 3
100.
b c
4 x 2 24 x 24
25 b 6
95.
99.
6 3
1 x
4 3x
2
x 1
x 4
10 x 2 16 x 42
121a 2 169b 2
2m5 m 4 8m3 m 4
1 2
2
x
x
3
3
104.
xy
y2
3z 3 2 z 2 2 z 9
105.
2 y 8 x3
106.
4x1 2
y2 3
107.
5x5 8
y1 8
4
2 x3 y 3
108.
4 x 3 5x 2
109.
2 x 9 x2 3
110.
111.
2x 1 2x 1 x 5
4 4a 5 4a 3
112.
a 13 a 2
113.
a 13 a 6
114.
9 x 5y x y
115.
x2
r2
116.
Prime
117.
6m2 n 2mnp 3
118.
3 5b 2 2b 4
119.
27 10 2
23
120.
14
4
121.
5 3
6
122.
x r x r
4
5
4
,2
3
134.
135.
x
4x
136.
137.
5 x
123.
126.
12 ft
127.
14 cm
128.
122.5 mph
129.
319 quarts
130.
12 hours
131.
42 lbs of $0.24/lb and 12 lbs of
$0.42/lb
132.
90 lbs
133.
9 hours
x
4 y
x 16 y
5 x 20 xy
x 16 y
124.
21x
12 xy
125.
59 15 668
473
138.
or
– 12 , 3
3
xz
x z
139.
3
140.
bc
b c