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1. |
Simplify 3(2a + b) + 6(a - 2b). |
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A. |
12a + b |
B. |
12a + 15b |
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C. |
12a - 9b |
D. |
12a + 9b |
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Hint |
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2. |
Find the mode for the stem-and-leaf plot shown below. |
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A. |
25 |
B. |
59 |
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C. |
52 |
D. |
53 |
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Hint |
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3. |
When Kristin works 8 hours, she earns $60. When she works 20 hours, she earns $150. Write a linear equation that describes her earnings. Assume that the changes increase linearly. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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4. |
Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write an inequality that expresses the total number of squares to be sewn. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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5. |
Simplify (-3a5b3)4. |
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A. |
-81a9b12 |
B. |
-12a9b7 |
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C. |
-12a20b12 |
D. |
81a20b12 |
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Hint |
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6. |
Find the median of {55, 21, 47.4, 69, 71}. |
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A. |
47.4 |
B. |
71 |
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C. |
55 |
D. |
21 |
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Hint |
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7. |
Which angle corresponds to  if  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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8. |
Find the standard deviation of the set {15, 42, 30, 22, 19, 32} to the nearest hundredth. |
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A. |
10.03 |
B. |
10.14 |
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C. |
9.91 |
D. |
9.05 |
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Hint |
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9. |
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A. |
diameter |
B. |
center |
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C. |
radius |
D. |
circumference |
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Hint |
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10. |
A company e-mails the daily cafeteria menu to its employees at a random time between 8:00 a.m. and 9:00 a.m. What is the probability that the menu will be e-mailed between 8:00 a.m. and 8:20 a.m.? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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11. |
What is the probability of selecting 3 vowels at random from the word mathematics? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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12. |
A square is reduced by a scale factor of . The area of the image is how many times the area of the preimage? |
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A. |
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B. |
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C. |
4 |
D. |
2 |
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Hint |
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13. |
The intersection of two planes could be a ______. |
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A. |
segment |
B. |
line |
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C. |
plane |
D. |
point |
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Hint |
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14. |
The exterior angle of a regular polygon is 32.7°. Find the number of sides. |
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A. |
6 |
B. |
7 |
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C. |
11 |
D. |
10 |
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Hint |
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15. |
Find the volume of the cone. (Round to the nearest tenth.) |
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A. |
29.5 cu. units |
B. |
75.4 cu. units |
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C. |
15.4 cu. units |
D. |
38.1 cu. units |
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Hint |
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16. |
Write the slope-intercept form of an equation for the line that passes through (-8, -1) and is parallel to the graph of  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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17. |
Find the product of  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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18. |
Which of the following is the correct rotation matrix for a rotation of 180°counterclockwise about the origin? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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19. |
Complete 4.5 kg = ___?___ g |
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A. |
45 |
B. |
450 |
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C. |
4500 |
D. |
0.0045 |
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Hint |
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20. |
Which is the image of the figure shown when it is tuned 270° counter clockwise about the center point P? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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