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1. |
Name the multiplicative inverse of 5. |
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A. |
-5 |
B. |
50 |
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C. |
20 |
D. |
0.2 |
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Hint |
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2. |
Solve 7(2k + 4) - (3k + 1) = 49. |
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A. |
1 |
B. |
2 |
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C. |
1.8 |
D. |
4 |
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Hint |
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3. |
Determine which equation represents a function. |
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A. |
 |
B. |
y = -2x + 1 |
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C. |
x = y2 - 1 |
D. |
x = 4 |
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Hint |
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4. |
State the slope and y-intercept of the graph of -y = -0.9x + 4. |
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A. |
m = 0.9, b = -4 |
B. |
m = -0.9, b = 4 |
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C. |
m = -4, b = 0.9 |
D. |
m = 4, b = -0.9 |
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Hint |
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5. |
Write an equation of the line that passes through (10,-4) and is perpendicular to the line whose equation is  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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6. |
Choose the graph of 3y - 2x > 6. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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7. |
Find the value of 63. |
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A. |
729 |
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B. |
36 |
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C. |
18 |
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D. |
216 |
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Hint |
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8. |
Simplify (-3a5b3)4. |
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A. |
-12a9b7 |
B. |
-81a9b12 |
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C. |
-12a20b12 |
D. |
81a20b12 |
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Hint |
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9. |
Simplify (4r - s) - (r + 2s) + (3r - s). |
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A. |
3r - 2s |
B. |
6r - 3s |
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C. |
8r |
D. |
6r - 4s |
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Hint |
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10. |
Simplify  |
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A. |
x + 7 |
B. |
x2 + 7 |
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C. |
x - 4 |
D. |
x + 4 |
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Hint |
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11. |
Find  |
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A. |
9y2 |
B. |
9|y3| |
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C. |
9y |
D. |
81y |
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Hint |
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12. |
Identify the multiplicative inverse of 2.5. |
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A. |
0.4 |
B. |
0.25 |
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C. |
5.2 |
D. |
0.5 |
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Hint |
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13. |
Name the property of equality illustrated by the following statement. If n – 3 = 5 + 4, then n – 3 = 9. |
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A. |
Transitive |
B. |
Substitution |
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C. |
Reflexive |
D. |
Symmetric |
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Hint |
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14. |
Solve the inequality –13 < -5x – 3 < 17. |
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A. |
{x | 2 < x < -4} |
B. |
{x | -4 < x < 2} |
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C. |
{x | -2 < x < 4} |
D. |
{x | 4 > x > -2} |
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Hint |
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15. |
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. |
$217 |
B. |
$50 |
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C. |
$70 |
D. |
$25 |
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Hint |
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16. |
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. |
infinite |
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C. |
(2, 2, –2) |
D. |
(2, 2, 1) |
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Hint |
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17. |
What is true about a system of equations in three variables that has 1 solution? |
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A. |
planes intersect in the same plane |
B. |
planes intersect in one point |
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C. |
planes intersect in one line |
D. |
planes have no points in common |
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Hint |
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18. |
Which of the following matrices is equal to  |
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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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19. |
Suppose a matrix equation of a system of equations does not have a unique solution. What cannot be true? |
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A. |
 |
B. |
 |
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C. |
 is undefined |
D. |
ad – bc ? 0 |
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Hint |
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20. |
Determine whether the expression 5x3y3 – x2y2 is a polynomial. |
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A. |
Cannot be determined from given information. |
B. |
No, because there are two variables. |
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C. |
No, because there are two terms. |
D. |
Yes. |
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Hint |
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