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1. |
Write an inequality for the sentence three times a number is less than 45. |
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A. |
3x > 45 |
B. |
3x 45 |
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C. |
3 + x < 45 |
D. |
3x < 45 |
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Hint |
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2. |
Solve 3r + 5 > 26. |
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A. |
 |
B. |
 |
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C. |
r > 7 |
D. |
r > 21 |
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Hint |
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3. |
Use elimination to solve the system of equations. -x + 2y = 18 x + 8y = -38 |
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A. |
(-5, -1) |
B. |
(-22, -2) |
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C. |
 |
D. |
 |
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Hint |
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4. |
Tamara and Joanne collect stamps. Tamara has 30 less than 5 times the number of stamps that Joanne has. Tamara also has 42 more stamps than Joanne. How many stamps does Tamara have? |
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A. |
18 |
B. |
23 |
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C. |
42 |
D. |
60 |
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Hint |
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5. |
John and Margaret have both ridden on the roller coaster called The Scream. Margaret has ridden it eight more than three times the number than John has. She also has ridden it five times the number John has. How many times has John ridden The Scream? |
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A. |
4 |
B. |
6 |
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C. |
3 |
D. |
20 |
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Hint |
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6. |
Use a graphing calculator to graph y = 8x – 2x2. Estimate the highest point on the graph. |
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A. |
(7, 3) |
B. |
(3, 7) |
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C. |
(8, 2) |
D. |
(2, 8) |
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Hint |
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7. |
A ball is launched straight up from ground level modeling the equation h = 52t – 10t2, where h stands for height in meters and t stands for time. On its way up, it reached a particular height at 1 second. On its way down, it again reached the same height. At approximately what time did it reach that height the second time? |
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A. |
4.2 seconds |
B. |
5.2 seconds |
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C. |
2.0 seconds |
D. |
3.5 seconds |
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Hint |
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8. |
Use a graph to solve the system of equations. y = x2 y = –x + 2 |
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A. |
(4, 1), (1, –2) |
B. |
(–2, 1), (1, 4) |
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C. |
(–2, 4), (1, 1) |
D. |
(1, 1), (4, –2) |
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Hint |
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