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1. |
Write  in standard form where A, B, and C are integers whose greatest common factor is 1. |
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A. |
3x + 8y = 16 |
B. |
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C. |
3x - 8y = 16 |
D. |
3x - 8y = 2 |
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Hint |
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2. |
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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A. |
infinite number |
B. |
0 |
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C. |
2 |
D. |
1 |
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Hint |
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3. |
Find 3 |
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A. |
 |
B. |
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C. |
 |
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 = 7
5t = 12 |
B. |
-2s + 5t = 7
s + 8t = 12 |
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C. |
-2s + t = 7
5s + 8t = 12 |
D. |
-2s + t = 12
5s + 8t = 7 |
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Hint |
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5. |
Find the product of -15i and its conjugate. |
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A. |
15i |
B. |
225 |
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C. |
225i |
D. |
-225 |
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Hint |
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6. |
Which is the quadratic term in the function f(x) = 3x2 + 6x - 4? |
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A. |
3x2 |
B. |
x2 |
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C. |
3x2 + 6x - 4 |
D. |
3 |
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Hint |
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7. |
Use the graph to determine the solution(s) of
x2 - x - 6 = 0. |
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A. |
-2, 3 |
B. |
-3, 2 |
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C. |
-2 |
D. |
-6 |
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Hint |
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8. |
Solve the equation w2 - 4w = 12 by graphing. |
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A. |
1, 4 |
B. |
0, -3 |
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C. |
-2, 6 |
D. |
6 |
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Hint |
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9. |
State the number of positive real zeros for the polynomial
f(x) = x3 + 4x2 + x + 5. |
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A. |
1 |
B. |
3 |
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C. |
0 |
D. |
2 |
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Hint |
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10. |
Identify the multiplicative inverse of 2.5. |
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A. |
0.4 |
B. |
0.25 |
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C. |
0.5 |
D. |
5.2 |
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Hint |
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11. |
Solve x + 7 > 13. |
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A. |
{x | x > 6} |
B. |
{x | x < 13} |
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C. |
{x | x  20} |
D. |
{x | x > 20} |
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Hint |
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12. |
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept form. |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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13. |
What is the slope of a constant function? |
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A. |
c, where f (x) = c |
B. |
-1 |
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C. |
0 |
D. |
1 |
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Hint |
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14. |
Which graph shows the inequality 5x 2y  8? |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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15. |
Solve the system 4y 6x + 8z = 13, 10y 15x + 20z = 6, y 5x + 2z = 5. |
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A. |
no solution |
B. |
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C. |
infinite solutions |
D. |
(-3, 1, 7) |
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Hint |
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16. |
In order for a matrix to have an inverse, what must be true? |
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A. |
ad bc = 0 |
B. |
ad bc  1 |
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C. |
ad bc 0 |
D. |
ad bc = 1 |
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Hint |
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17. |
Express the result in scientific notation. (3 × 10-3)(2 × 109) |
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A. |
6 × 106 |
B. |
3 × 106 |
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C. |
3 × 1012 |
D. |
6 × 1012 |
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Hint |
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18. |
Which of the following is prime? |
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A. |
3xy + 13x2 |
B. |
5xy>2 + 10y |
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C. |
7x2 y2 |
D. |
3x2 6y |
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Hint |
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19. |
What is the equation of the parabola whose vertex is at (-3, 1) and passes through the point (-2, 4)? |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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20. |
If a graph represents an odd-degree polynomial function, what must be true? |
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A. |
It must pass through the x-axis. |
B. |
It may not have any real roots. |
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C. |
It must have at least three roots. |
D. |
As  ,  |
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Hint |
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