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1. |
Simplify 6a + 15a. |
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A. |
21a2 |
B. |
42a |
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C. |
6a + 15a |
D. |
21a |
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Hint |
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2. |
Find the mode of {325, 100, 115, 621, 325, 325, 100}. |
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A. |
273 |
B. |
325 |
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C. |
100 |
D. |
115 |
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Hint |
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3. |
You have scores of 62, 75, and 90 on three of your history exams. What do you need to get on your fourth exam for a mean of 80? |
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A. |
97 |
B. |
93 |
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C. |
80 |
D. |
100 |
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Hint |
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4. |
Write an algebraic expression for b to the second divided by c to the fourth. |
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A. |
 |
B. |
b2c4 |
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C. |
b2 + c4 |
D. |
 |
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Hint |
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5. |
Write a verbal expression for the algebraic expression (2 - y) × 6. |
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A. |
two times six minus y |
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B. |
six times y minus two |
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C. |
the difference, y less than two, times six |
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D. |
two minus y times six |
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Hint |
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6. |
Find the area of the figure if a = 3 and b = 5. |
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A. |
16 square units |
B. |
225 square units |
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C. |
8 square units |
D. |
15 square units |
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Hint |
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7. |
Simplify (3a4b5c)4. |
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A. |
81a16b20c4 |
B. |
3a16b20c4 |
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C. |
7a16b20c4 |
D. |
12a8b9c5 |
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Hint |
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8. |
Find the volume of the rectangular solid shown below. |
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A. |
9a4b8 |
B. |
24a4b8 |
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C. |
24a2b10 |
D. |
24a2b7 |
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Hint |
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9. |
Use the Distributive Property to simplify 7(6x2 + 5x + 4). |
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A. |
42x2 + 35x + 4 |
B. |
42x2 + 5x + 4 |
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C. |
42x2 +35x + 21 |
D. |
42x2 + 35x + 28 |
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Hint |
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10. |
Graph the set of numbers on a number line. {-5, -2, 1, 3, 4} |
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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. |
Which scatter plot shows that x and y have a negative correlation? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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12. |
Every fifth person that comes out of a library is asked whether they prefer to read a book or watch a movie. Is this biased or unbiased and why? |
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A. |
biased, because the sample is not representative of everyone in the library |
B. |
unbiased, because the location is not important |
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C. |
unbiased, because they are using a systematic random sample |
D. |
biased, because a library loans out primarily books |
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Hint |
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13. |
What are the dimensions of the matrix ? |
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A. |
6 |
B. |
3 × 2 |
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C. |
4 × 2 |
D. |
2 × 3 |
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Hint |
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14. |
How many measurement classes are represented on the histogram? |
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 |
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A. |
9 |
B. |
14 |
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C. |
44 |
D. |
70 |
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Hint |
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15. |
A baseball owner is trying to convince people that he is spending too much on his players. He is paying 10 of them $1 million, 8 of them $2 million, and 3 of them $15 million. To support his case, which measure of central tendency should he use? |
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A. |
mode |
B. |
median |
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C. |
standard deviation |
D. |
mean |
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Hint |
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16. |
Which measure of variation does not depend on the mean? |
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A. |
mode |
B. |
variance |
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C. |
standard deviation |
D. |
range |
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Hint |
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17. |
What kind of sampling is represented if dentists from random areas of the city are asked about their favorite toothpaste? |
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A. |
Systematic Sampling |
B. |
Random Sampling |
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C. |
Cluster Sampling |
D. |
Convenience Sampling |
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Hint |
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18. |
Why is the graph misleading? |
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A. |
Scale should be smaller. |
B. |
Scale is not at even intervals. |
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C. |
Months are out of order. |
D. |
The dimensions other than height have changed. |
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Hint |
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19. |
What is B – C? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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20. |
Evaluate  , if b = 42. |
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A. |
-9 |
B. |
9 |
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C. |
6 |
D. |
 |
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Hint |
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