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1. |
Write an algebraic expression to represent ''the sum of 6 and three times a number squared.'' |
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A. |
6(3x) |
B. |
6 + 3x |
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C. |
6(3x)2 |
D. |
6 + 3x2 |
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Hint |
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2. |
Solve the system of equations. 
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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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3. |
The product  gives the coordinates of two points on line AB that has been rotated 90° counterclockwise about the origin. Name the coordinates of A' and B'. |
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A. |
A'(1, 1), B'(-1, -3) |
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B. |
A'(-1, -3), B'(1, 1) |
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C. |
A'(-1, 1), B'(1, -3) |
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D. |
A'(1, -3), B'(1, 1) |
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Hint |
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4. |
Solve  using inverse matrices. |
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A. |
(-4, 4) |
B. |
(-4, 0) |
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C. |
(4, -4) |
D. |
(4, 4) |
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Hint |
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5. |
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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6. |
Solve  |
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A. |
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B. |
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C. |
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D. |
5 |
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Hint |
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7. |
Simplify  |
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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. |
Solve the equation a2 + 4a = -3 by graphing or by factoring. |
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A. |
-3, 1 |
B. |
1, 3 |
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C. |
-1, 3 |
D. |
-3, -1 |
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Hint |
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9. |
Find g[h(x)] if g(x) = x2 and h(x) = x + 3. |
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A. |
x2 + 6x + 9 |
B. |
x3 + 3x2 |
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C. |
x2 + x + 3 |
D. |
x2 - x - 3 |
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Hint |
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10. |
Find  if g(x) = x - 5 and h(x) = |x|. |
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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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11. |
If y varies inversely as x and y = 3 when x = 3, find y when x = 4. |
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A. |
2.25 |
B. |
3.5 |
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C. |
4 |
D. |
1 |
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Hint |
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12. |
Solve x + 7 < 5 or x + 6 > 9. |
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A. |
{x | x > -2 or x < 3} |
B. |
{x | -2 < x < 3} |
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C. |
{x | x < -2 or x > 3} |
D. |
{x | -2 > x > 3} |
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Hint |
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13. |
Consider the function f (x) = -2(x + 8). Is this function a linear function? Why or why not? |
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A. |
Yes, the function can be written in the form f (x) = mx + b. |
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B. |
No, f is not a function. |
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C. |
No, the function cannot be written in the form f (x) = mx + b. |
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D. |
Yes, the coefficient of x is not zero. |
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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. |
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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. |
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. |
elimination, because Cramer's Rule doesn't apply to this problem |
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B. |
Cramer's Rule, because there are fewer calculations. |
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C. |
Cramer's Rule, because none of the other methods will correctly solve the problem |
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D. |
elimination, because 6.17 is a factor of 3.66 |
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Hint |
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16. |
Simplify  |
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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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17. |
Find two real numbers whose sum is 12 and whose product is 32. |
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A. |
2.25 and –14.25 |
B. |
7 and 5 |
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C. |
8 and 4 |
D. |
no solution |
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Hint |
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18. |
Write the expression  in quadratic form. |
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A. |
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B. |
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C. |
cannot be done, since  |
D. |
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Hint |
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19. |
Find all the zeros of  . |
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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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20. |
Which of the following functions has a hole and a vertical asymptote? |
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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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