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1. |
Simplify 3(2a + b) + 6(a - 2b). |
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A. |
12a + 9b |
B. |
12a + 15b |
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C. |
12a + b |
D. |
12a - 9b |
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Hint |
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2. |
Solve x + 4 > 1 or x - 7 < 6. |
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A. |
{x | x > -3} |
B. |
all reals |
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C. |
{x | x < 13} |
D. |
{x | x < -3 or x > 13} |
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Hint |
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3. |
Which is the standard form of a linear equation? |
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A. |
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B. |
4x - 9y = 1 |
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C. |
y = 2x - 3 |
D. |
3x2 + y = 5 |
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Hint |
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4. |
Use Cramer's rule to solve the system of equations. 
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A. |
(0.4, 0.2) |
B. |
(0.011, 0.0055) |
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C. |
(0.2, 0.4) |
D. |
(-0.4, -0.2) |
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Hint |
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5. |
Solve the system of equations. 
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A. |
(10, -1, 11) |
B. |
(1, -4, 6) |
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C. |
(7, -2, 1) |
D. |
(13, 0, -4) |
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Hint |
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6. |
Find A - B if  and  |
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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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7. |
For the determinant  , which is the minor of -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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8. |
If  , find I so that  |
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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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9. |
Factor 2r3 + 8r2 - 10r completely. |
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A. |
2(r3 + 4r2 - 5r) |
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B. |
(2r - 1)(r + 5) |
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C. |
2r(r - 1)(r + 5) |
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D. |
2r(r2 + 4r - 5) |
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Hint |
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10. |
Solve  |
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A. |
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B. |
5 |
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C. |
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D. |
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Hint |
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11. |
Find the vertex of the graph of f(x) = x2 + 4x - 5. |
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A. |
(-2, -9) |
B. |
(0, -5) |
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C. |
(2, 7) |
D. |
(-2, 9) |
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Hint |
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12. |
Which function has a graph that opens upward? |
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A. |
f(x) = -5x2 -6x -3 |
B. |
f(x) = 2x2 - 5x - 2 |
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C. |
f(x) = -x2 + 4x + 7 |
D. |
f(x) = -x2 + 3x -12 |
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Hint |
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13. |
Find the vertex of the graph of the function f(x) = x2 - 6x + 5. |
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A. |
(-3, 4) |
B. |
(3, -4) |
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C. |
(3, 4) |
D. |
(-6, 5) |
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Hint |
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14. |
State the number of positive real zeros for the polynomial
f(x) = x3 + 4x2 + x + 5. |
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A. |
0 |
B. |
2 |
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C. |
1 |
D. |
3 |
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Hint |
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15. |
Which equation is in quadratic form? |
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A. |
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B. |
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C. |
x4 - x2 + x - 1 = 0 |
D. |
3x3 + 3x + 3 = 0 |
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Hint |
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16. |
Find g[h(x)] if g(x) = x2 and h(x) = x + 3. |
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A. |
x2 + x + 3 |
B. |
x2 - x - 3 |
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C. |
x3 + 3x2 |
D. |
x2 + 6x + 9 |
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Hint |
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17. |
Which pair of functions are inverses? |
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A. |
f(x) = 4x, g(x) = -4x |
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B. |
f(x) = 2x + 1,
g(x) = 2x - 1 |
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C. |
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D. |
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Hint |
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18. |
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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19. |
What is the domain and range of  ? |
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A. |
D: 
R:  |
B. |
D: 
R:  |
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C. |
D:
R: |
D. |
D:
R: |
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Hint |
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20. |
Which graph represents the solution of the system of inequalites  |
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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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