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1. |
Solve 4x > 28. |
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A. |
{x | x < 7} |
B. |
{x | x > 28} |
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C. |
{x | x > 7} |
D. |
{x | x < 4} |
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Hint |
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2. |
Choose the scatter plot that has a prediction equation with a negative slope. |
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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. |
What is the solution of the system of inequalities? 
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A. |
region 3 |
B. |
region 2 |
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C. |
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D. |
region 1 |
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Hint |
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4. |
Which is not a point at which a maximum or minimum value of a function could occur for the feasible region? |
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A. |
(-3, 0) |
B. |
(-3, 6) |
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C. |
(0, 3) |
D. |
(1, 5) |
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Hint |
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5. |
The solution of a system of three linear equations in three variables, x, y, and z, is called a(n) ____ (x, y, z). |
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A. |
ordered triple |
B. |
integer |
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C. |
sum |
D. |
ordered pair |
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Hint |
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6. |
Solve  . |
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A. |
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B. |
(-2, -8) |
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C. |
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D. |
(2, 8) |
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Hint |
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7. |
Evaluate  using expansion by minors. |
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A. |
64 |
B. |
14 |
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C. |
68 |
D. |
80 |
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Hint |
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8. |
Find the inverse 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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9. |
Solve the equation  |
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A. |
9 |
B. |
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C. |
-1 |
D. |
20 |
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Hint |
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10. |
Solve the equation | 3a + 2 | - 2 = 4a + 1. |
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A. |
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B. |
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C. |
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D. |
-1 |
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Hint |
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11. |
Solve x + 7 < 5 or x + 6 > 9. |
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A. |
{x | -2 < x < 3} |
B. |
{x | -2 > x > 3} |
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C. |
{x | x > -2 or x < 3} |
D. |
{x | x < -2 or x > 3} |
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Hint |
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12. |
Solve the inequality | 6x + 2 | < 5. |
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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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13. |
Find the domain of the relation shown in the graph. |
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A. |
{-2, -1, 1, 2, 3, 5} |
B. |
{0, 1, 2, 3} |
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C. |
{-3, -2, -1, 0, 1, 3} |
D. |
{-3, -2, -1, 0, 1, 2, 3, 5} |
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Hint |
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14. |
Choose the line that has a slope of zero. |
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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. |
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept form. |
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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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16. |
Which graph represents the following system:  |
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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. |
At a firm, there are three workers that are supposed to work a combined 110 hours per week. Worker 1 gets paid $10 per hour, worker 2 gets paid $12 per hour, and worker 3 gets paid $14 per hour. If the company wants their total income to be $1268, how many hours should each one work if worker 3 and worker 2 work for the same amount of hours? |
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A. |
worker 1: 14worker 2: 48worker 3: 48 |
B. |
worker 1: 40worker 2: 35worker 3: 35 |
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C. |
worker 1: 54worker 2: 28worker 3: 28 |
D. |
worker 1: 44worker 2: 33worker 3: 33 |
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Hint |
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18. |
Solve  |
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A. |
(1, –2) |
B. |
(–1, 2) |
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C. |
(2, –1) |
D. |
(–2, 1) |
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Hint |
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19. |
Which of the following is the correct rotation matrix for a rotation of 180°counterclockwise about the origin? |
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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. |
Find the coordinates of the vertices of the image of a rectangle ABCD with A(4, -3), B(-3, 1), C(-7, -3), and D(5, 2) after a reflection across the line y = x. |
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A. |
A'(3, 4),B'(-1, -3),C'(3, -7),D'(-2, 5) |
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B. |
A'(-4, -3),B'(3, 1),C'(7, -3),D'(-5, 2) |
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C. |
A'(-3, 4),B'(1, -3),C'(-3, -7),D'(2, 5) |
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D. |
A'(-3, -4),B'(1, 3),C'(-3, 7),D'(2, -5) |
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Hint |
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