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1. |
Simplify 3 + 2(xy+ 3z) + 4xy. |
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A. |
9xy + 15z |
B. |
6xy + 6z + 3 |
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C. |
5xy + 3z + 3 |
D. |
6xy + 3z + 3 |
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Hint |
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2. |
Find the mean of {3, 8, 10, 1, 25}. |
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A. |
9.4 |
B. |
9 |
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C. |
1 |
D. |
8 |
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Hint |
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3. |
Write an equation for {(5, 2), (0, 12), (1, 10), (-2, 16)} |
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A. |
y = x + 9 |
B. |
y = -2x + 12 |
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C. |
y = 2x - 12 |
D. |
y = x + 12 |
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Hint |
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4. |
Simplify (3a4b5c)4. |
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A. |
81a16b20c4 |
B. |
12a8b9c5 |
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C. |
3a16b20c4 |
D. |
7a16b20c4 |
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Hint |
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5. |
Simplify x3y0z-2. |
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A. |
 |
B. |
-x3yz2 |
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C. |
0 |
D. |
 |
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Hint |
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6. |
Simplify  . Assume the denominator is not equal to zero. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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7. |
Translate the equation into a verbal sentence.  |
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A. |
One-third of a number x minus 5 equals 4. |
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B. |
One-third times the difference of a number x and 5 is 4. |
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C. |
One-third of a number x minus 4 equals 5. |
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D. |
Five subtracted from the quotient of  and a number x is 4. |
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Hint |
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8. |
Find the next three terms in the sequence 10, 15, 25, 40, …. |
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A. |
65, 100, 145 |
B. |
60, 85, 115 |
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C. |
45, 50, 55 |
D. |
55, 70, 85 |
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Hint |
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9. |
Which scatter plot shows that x and y have a positive correlation? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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10. |
Find the median of the data. |
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A. |
29.5 |
B. |
23 |
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C. |
19.5 |
D. |
42.5 |
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Hint |
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11. |
Find 4!. |
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A. |
16 |
B. |
4 |
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C. |
24 |
D. |
10 |
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Hint |
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12. |
A bag contains 10 red marbles, 5 gray marbles, 12 black marbles, and 8 white marbles. Two marbles are randomly drawn from the bag without replacement. What is the probability of drawing a black marble followed by a red marble? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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13. |
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. |
Convenience Sampling |
B. |
Random Sampling |
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C. |
Cluster Sampling |
D. |
Systematic Sampling |
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Hint |
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14. |
Find the mode of {2, 4, 14, 2, 12, 10, 4, 14, 2}. |
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A. |
No mode |
B. |
2 |
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C. |
4 |
D. |
14 |
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Hint |
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15. |
Find the range of {120, 42, 62, 44, 20, 42, 112}. |
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A. |
42 |
B. |
100 |
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C. |
44 |
D. |
63 |
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Hint |
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16. |
Find the mean of the data in the stem-and-leaf plot. |
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A. |
67 |
B. |
99 |
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C. |
78 |
D. |
77 |
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Hint |
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17. |
Which relationship will most likely have a positive correlation? |
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A. |
The number of movie tickets sold and the amount of popcorn sold. |
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B. |
Rising temperatures and ski equipment sales. |
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C. |
A person's height and a person's eye color. |
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D. |
Battery power of a flashlight, and continued use of the flashlight. |
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Hint |
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18. |
How could the graph be changed so it is not misleading? |
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A. |
Diameters of the cans should be the same. |
B. |
Change the graph from vertical to horizontal. |
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C. |
Color should be added. |
D. |
Change the vertical scale so that the maximum value is 100. |
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Hint |
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19. |
A bag of marbles has 3 green marbles, 3 red marbles and 6 yellow marbles. One marble is taken from the bag. It is not replaced. Then another marble is taken from the bag. What is the probability that the first marble is yellow and the second marble is green? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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20. |
Calculate 6C2 |
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A. |
90 |
B. |
8 |
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C. |
60 |
D. |
15 |
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Hint |
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