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1. |
Which inequality is graphed below? |
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A. |
y < 8 |
B. |
y > 8 |
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C. |
x < 8 |
D. |
y < 8 |
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Hint |
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2. |
Use elimination to solve the system of equations.
-x + 2y = 18
x + 8y = -38 |
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A. |
(-5, -1) |
B. |
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C. |
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D. |
(-22, -2) |
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Hint |
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3. |
Evaluate (3.2 × 10-5)(5.4 × 109). Express the result in scientific notation. |
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A. |
1.728 × 105 |
B. |
0.1728 × 106 |
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C. |
17.28 × 104 |
D. |
1.728 × 103 |
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Hint |
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4. |
What is the solution of the system of equations shown below? |
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A. |
(1, -2) |
B. |
(0, 0) |
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C. |
(0, -3) |
D. |
(3, 0) |
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Hint |
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5. |
Which ordered pair is a solution of y < -4x - 5? |
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A. |
(-7, 0) |
B. |
(2, 3) |
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C. |
(1, -3) |
D. |
(0, 6) |
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Hint |
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6. |
Find  |
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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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7. |
Solve the equation x2 = 0.81. |
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A. |
x = 0.9 or x = -0.9 |
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B. |
x = -0.9 only |
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C. |
none of these is correct |
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D. |
x = 0.9 only |
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Hint |
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8. |
Find the equation that has direct variation. |
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A. |
y = –3x – 1 |
B. |
y = 4x |
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C. |
y = 5x + 1.3 |
D. |
y = 0.8x + 9 |
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Hint |
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9. |
Find the graph that does not have direct variation. |
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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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10. |
Find the graph of y = x2 + 1. |
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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. |
What is the lowest point on the graph of y = x2 + 2? |
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A. |
(0, 2) |
B. |
(2, 0) |
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C. |
(0, 0) |
D. |
(0, –2) |
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Hint |
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12. |
Find a quadratic equation for the table. |
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A. |
y = x2 – 5 |
B. |
y = 5x2 – 2 |
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C. |
y = 5x2 + 1 |
D. |
y = 5x2 – 1 |
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Hint |
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13. |
Consider the equation xy = 3. What happens to the value of y when x doubles? |
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A. |
y quarters |
B. |
y triples |
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C. |
y halves |
D. |
y doubles |
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Hint |
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14. |
Identify the growth factor in the equation p = 682,363 × 1.08n where p is the population and n is the number of years after 2001. |
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A. |
1.08 |
B. |
p |
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C. |
n |
D. |
682,363 |
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Hint |
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15. |
Use the following table to find the amount of medicine remaining in the bloodstream after n hours. |
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A. |
0.85n |
B. |
0.85 × 500n |
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C. |
500 × 0.85n |
D. |
425 × 0.85n |
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Hint |
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16. |
Find the table that does not represent an exponential equation. |
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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. |
Use a graphing calculator to graph y = 8x – 2x2. Estimate the highest point on the graph. |
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A. |
(2, 8) |
B. |
(3, 7) |
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C. |
(8, 2) |
D. |
(7, 3) |
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Hint |
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18. |
Choose the correct graph of y = 12x – 3x |
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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. |
Use you calculator's Table feature to approximate the solutions to the nearest hundredth.
4x(x + 2) = 12 |
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A. |
x = 1, x = –3 |
B. |
x = 2, x = –2 |
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C. |
x = 0, x = –4 |
D. |
x = –1, x = –4 |
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Hint |
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20. |
Toby needs to create a rectangular pen for his dog. He decides that the area of the pen will be 100 square feet with its length 2 feet longer than its width. As you find the width of the pen, which solution can be thrown away since the width cannot be negative? |
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A. |
–12.32 |
B. |
–9.05 |
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C. |
–8.32 |
D. |
–11.05 |
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Hint |
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