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1. |
Solve the system of equations by graphing. 
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A. |
(6, 2) |
B. |
(2, -6) |
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C. |
(-6, 2) |
D. |
(2, 6) |
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Hint |
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2. |
 |
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A. |
 |
B. |
 |
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C. |
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D. |
[10 37] |
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Hint |
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3. |
Determine which matrix has a determinant. |
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A. |
 |
B. |
 |
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C. |
[1 -4 -8] |
D. |
 |
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Hint |
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4. |
Write the matrix equation  as a system of linear equations. |
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A. |
-2s + t = 12
5s + 8t = 7 |
B. |
-2s + t = 7
5s + 8t = 12 |
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C. |
-2s + 5t = 7
s + 8t = 12 |
D. |
-2s = 7
5t = 12 |
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Hint |
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5. |
What is the first step in solving the matrix equation
 |
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A. |
Multiply each side of the matrix equation by  |
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B. |
Find the inverse of |
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C. |
Multiply each side of the matrix equation by the identity matrix. |
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D. |
Divide each side of the matrix equation by |
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Hint |
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6. |
Find the coordinates of the vertex of the parabola with equation
x = (y - 2)2 - 3. |
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A. |
(-3, 2) |
B. |
(-3, -2) |
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C. |
(-2, 3) |
D. |
(2, -3) |
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Hint |
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7. |
What is the leading coefficient of the polynomial
p(x) = -3x5 + 4x3 - 5x2 + 4x - 6? |
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A. |
-3 |
B. |
3 |
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C. |
-6 |
D. |
4 |
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Hint |
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8. |
Which equation is in quadratic form? |
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A. |
 |
B. |
 |
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C. |
3x3 + 3x + 3 = 0 |
D. |
x4 - x2 + x - 1 = 0 |
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Hint |
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9. |
Solve the equation  |
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A. |
20 |
B. |
 |
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C. |
-1 |
D. |
9 |
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Hint |
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10. |
When the equation  is written in standard form, what is the value of B? |
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A. |
 |
B. |
-25 |
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C. |
 |
D. |
25 |
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Hint |
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11. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
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A. |
$25 |
B. |
$50 |
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C. |
$70 |
D. |
$217 |
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Hint |
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12. |
Suppose a plant grows one inch every year. If x is how old the plant is (in years), and f (x) is how tall the plant is (in inches), what type of function is f (x)? |
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A. |
identity function |
B. |
absolute value function |
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C. |
constant function |
D. |
step function |
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Hint |
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13. |
If  and  find 4A – 5B. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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14. |
Evaluate  |
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A. |
128 |
B. |
–38 |
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C. |
–128 |
D. |
38 |
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Hint |
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15. |
In order for a matrix to have an inverse, what must be true? |
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A. |
ad – bc  1 |
B. |
ad – bc = 0 |
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C. |
ad – bc = 1 |
D. |
ad – bc 0 |
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Hint |
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16. |
In the expression q9 = p, what is the cube root of p? |
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A. |
q3 |
B. |
 |
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C. |
q6 |
D. |
 |
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Hint |
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17. |
 |
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A. |
6 |
B. |
 |
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C. |
72 |
D. |
36 |
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Hint |
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18. |
Which graph of the following functions will be strictly above the graph of  ? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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19. |
Solve  |
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A. |
Solutions are 1 and  . |
B. |
Solutions are 1 and 3125. |
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C. |
Solutions are –1, 1, and 3125. |
D. |
Solutions are –1 and 3125. |
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Hint |
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20. |
Gail and Gayla throw balls into the air. The equation  represents Gail's throw, where x is time in seconds, and y is height. Gayla's throw is represented by  When are the balls at the same height? |
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A. |
at –1 seconds |
B. |
at 7 seconds |
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C. |
at 5 seconds |
D. |
never |
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Hint |
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