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1. |
What is the value of |-101|? |
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A. |
10.1 |
B. |
0 |
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C. |
-101 |
D. |
101 |
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Hint |
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2. |
Find the value of  |
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A. |
-2 |
B. |
0 |
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C. |
2 |
D. |
14 |
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Hint |
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3. |
Which element is in row 3, column 1? |
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 |
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A. |
4 |
B. |
-1 |
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C. |
9 |
D. |
6 |
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Hint |
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4. |
Evaluate  using expansion by minors. |
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A. |
68 |
B. |
14 |
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C. |
80 |
D. |
64 |
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Hint |
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5. |
Simplify  |
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A. |
 |
B. |
9 |
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C. |
3 |
D. |
27 |
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Hint |
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6. |
Solve  |
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A. |
 |
B. |
5 |
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C. |
 |
D. |
 |
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Hint |
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7. |
Simplify  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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8. |
Solve x2 - 6x = 0 by graphing or by factoring. |
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A. |
-6 |
B. |
-6, 0 |
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C. |
0 |
D. |
0, 6 |
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Hint |
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9. |
Suppose a ball is thrown straight up at a speed of 50 feet per second. The time in seconds that it takes for the ball to hit the ground can be found by solving the equation 5 + 50t - 16t2 = 0. Approximately how long does it take for the ball to hit the ground? |
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A. |
4.8 s |
B. |
3.2 s |
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C. |
-0.1 s |
D. |
0.1 s |
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Hint |
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10. |
Find f(-2) for f(x) = 2x4 - x3 + 5x + 1. |
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A. |
-29 |
B. |
31 |
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C. |
-21 |
D. |
-57 |
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Hint |
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11. |
Which is not a root of z3 + 8 = 0? |
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A. |
 |
B. |
2 |
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C. |
 |
D. |
-2 |
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Hint |
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12. |
Identify the multiplicative inverse of 2.5. |
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A. |
5.2 |
B. |
0.4 |
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C. |
0.5 |
D. |
0.25 |
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Hint |
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13. |
Which of the following systems of equations is inconsistent? |
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A. |
y = 7x – 2 y = –2x – 5 |
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B. |
3y + 2x = 13 6y + 4x = 3 |
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C. |
4y – x = 12 3y – 2x = 1 |
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D. |
y = 2x – 3 y = –3x + 4 |
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Hint |
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14. |
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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15. |
What is always true of an n × n matrix? |
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A. |
It is a row matrix. |
B. |
It has at least two rows and two columns. |
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C. |
It is a square matrix. |
D. |
It is a column matrix. |
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Hint |
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16. |
Which of the following is the correct rotation matrix for a rotation of 180°counterclockwise about the origin? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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17. |
Which method of finding solutions would work best to find the solutions to the system 12.4x – 3.66y = 12.19, 3.9x + 6.17y = 19.28, and why? |
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A. |
Cramer's Rule, because there are fewer calculations. |
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B. |
Cramer's Rule, because none of the other methods will correctly solve the problem |
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C. |
elimination, because 6.17 is a factor of 3.66 |
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D. |
elimination, because Cramer's Rule doesn't apply to this problem |
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Hint |
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18. |
Solve x4 – 625 = 0 |
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A. |
 |
B. |
 |
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C. |
 |
D. |
5, 5i |
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Hint |
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19. |
Find all of the roots of the equation  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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20. |
If two functions f and g are inverse relations, which of the following points must be on graph g if it is on graph f ? |
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A. |
(2, -2) |
B. |
(1, 1) |
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C. |
Cannot be determined from given information. |
D. |
(-1, 1) |
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Hint |
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