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1. |
Solve  |
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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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2. |
A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
negative. |
B. |
undefined. |
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C. |
positive. |
D. |
zero. |
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Hint |
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3. |
The equations y = -0.38x + 56.6 and y = 0.38x + 43.4 represent the percent of men and women, respectively, receiving bachelor's degrees, where x is the number of years since 1968. In approximately what year did the same percent of men and women receive bachelor's degrees? |
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A. |
1990 |
B. |
1980 |
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C. |
1985 |
D. |
1995 |
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Hint |
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4. |
Choose the matrix that represents the ordered triple (5, -7, 1). |
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A. |
[5 -7 1] |
B. |
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C. |
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D. |
[1 -7 5] |
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Hint |
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5. |
 |
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A. |
[10 37] |
B. |
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C. |
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D. |
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Hint |
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6. |
Simplify (8 - 9i) + (3 + 4i). |
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A. |
11 + 5i |
B. |
11 - 5i |
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C. |
17 + 7i |
D. |
-i + 17 |
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Hint |
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7. |
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A. |
7 – 8 + 9 – 10; -2 |
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B. |
–7 + (-8) + (-9) + (-10); -34 |
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C. |
7 + 8 + 9 + 10; 34 |
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D. |
–7 + 8 + (-9) + 10; 2 |
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Hint |
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8. |
 |
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A. |
430 |
B. |
838.5 |
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C. |
860 |
D. |
820 |
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Hint |
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9. |
Find the next two terms of the geometric sequence 64, -32, 16, -8, . . . . |
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A. |
-16, -32 |
B. |
4, -2 |
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C. |
-4, 2 |
D. |
16, -32 |
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Hint |
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10. |
Write the first four terms of the geometric sequence in which a1 = -3 and r = -4. |
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A. |
-3, 12, -48, 192 |
B. |
3, -12, 48, -192 |
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C. |
–3, -12, -48, -192 |
D. |
3, 12, 48, 192 |
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Hint |
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11. |
What is the fifth term of a geometric sequence if a1 = 7 and r = 0.2? |
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A. |
1.4 |
B. |
0.0112 |
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C. |
0.28 |
D. |
5.6 |
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Hint |
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12. |
Find three geometric means between 3 and 48. Then select the graph that uses the x-axis for the number of the term and the y-axis for the term itself. |
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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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13. |
A bag contains 7 blue marbles, 8 green marbles, 15 red marbles, and 10 yellow marbles. Find the probability of randomly drawing without replacement, a blue marble and then a red. |
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A. |
 or about 0.2273 |
B. |
 or about 0.0438 |
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C. |
 or about 0.0673 |
D. |
 or about 0.0656 |
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Hint |
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14. |
In 1992, 92% of the people surveyed felt that professional athletes were overpaid. If the margin of error for the sampling was 3%, how many people were surveyed? |
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A. |
736 |
B. |
225 |
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C. |
2944 |
D. |
327 |
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Hint |
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15. |
Simplify  . |
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A. |
n + 1 |
B. |
n |
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C. |
n + 1 |
D. |
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Hint |
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16. |
Is the relation shown in the graph a function? Why or why not? |
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A. |
No, the relation contains the ordered pairs (0, -1) and (3, -1). |
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B. |
Yes, the relation contains very few ordered pairs. |
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C. |
Yes, the ordered pairs (-3, 2), (-1, 1), and (3, -1) form a straight line. |
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D. |
No, the relation contains the ordered pairs (3, -1) and (3, 2). |
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Hint |
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17. |
Which of the following matrices is equal to  |
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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. |
Solve the system   . |
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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. |
The amount of work done by James and his relative distance to Samuel is inversely related. When James is 6 feet away from Samuel, he can get 13 assignments done per hour. How many assignments can James get done when he is 52 feet away from Samuel? |
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A. |
24 assignments |
B. |
59 assignments |
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C. |
112.7 assignments |
D. |
1.5 assignments |
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Hint |
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20. |
Which measure of variation does not depend on the mean? |
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A. |
range |
B. |
standard deviation |
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C. |
variance |
D. |
mode |
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Hint |
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