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1. |
A graph of a system of three linear equations in three variables is shown below. How many solutions does the system have? |
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 |
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A. |
1 |
B. |
2 |
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C. |
0 |
D. |
infinite number |
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Hint |
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2. |
For the determinant  , which is the minor of -4? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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3. |
Which is the graph of x = -y2 + 8y - 14? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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4. |
Solve x2 - 4x - 5 = 0 by factoring. |
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A. |
1, 5 |
B. |
-1, 5 |
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C. |
-1, -5 |
D. |
1, -5 |
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Hint |
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5. |
Solve m2 - 2m = 15 by factoring. |
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A. |
-3, 5 |
B. |
5 |
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C. |
-5, 3 |
D. |
3 |
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Hint |
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6. |
Find the axis of symmetry of the graph of f(x) = 4x2 -4x + 4. |
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A. |
x =  |
B. |
x = 4 |
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C. |
y = 3 |
D. |
x = 2 |
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Hint |
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7. |
When 2x3 + x2 - 3 is divided by x + 1, the remainder is _____. |
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A. |
-4 |
B. |
3 |
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C. |
-2 |
D. |
0 |
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Hint |
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8. |
What is the equation of the vertical asymptote of the function  ? |
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A. |
x = 1 |
B. |
x = 2 |
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C. |
y = 1 |
D. |
x = -4 |
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Hint |
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9. |
Find log 47.2 to four decimal places. |
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A. |
2.0791 |
B. |
1.6739 |
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C. |
3.8544 |
D. |
0.6739 |
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Hint |
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10. |
Solve the inequality | 5x + 2 |  12. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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11. |
Solve the inequality | 6x + 2 | < 5. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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12. |
Solve the inequality –13 < -5x – 3 < 17. |
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A. |
{x | -4 < x < 2} |
B. |
{x | -2 < x < 4} |
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C. |
{x | 4 > x > -2} |
D. |
{x | 2 < x < -4} |
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Hint |
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13. |
What are the solutions to the system y + 2x – 5z = 4, –2y – 4x + 10z = 8, 3y + x – 3z = 5? |
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A. |
no solution |
B. |
(2, 2, 1) |
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C. |
infinite |
D. |
(2, 2, –2) |
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Hint |
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14. |
Which of the following is an example of a column matrix? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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15. |
Simplify  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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16. |
Evaluate  |
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A. |
27 |
B. |
81 |
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C. |
486 |
D. |
9 |
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Hint |
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17. |
Solve  |
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A. |
36 |
B. |
18 |
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C. |
no real solution. |
D. |
 |
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Hint |
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18. |
Which of the following is a zero of the polynomial  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
6 |
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Hint |
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19. |
Write the equation  in standard form. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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20. |
The graph represents which of the following? |
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 |
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A. |
circle |
B. |
parabola |
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C. |
ellipse |
D. |
hyperbola |
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Hint |
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