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1. |
Solve  . |
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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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2. |
Solve 3r + 5 > 26. |
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A. |
r > 21 |
B. |
r > 7 |
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C. |
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D. |
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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. |
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C. |
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D. |
(-22, -2) |
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Hint |
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4. |
Julian said, ''I'm thinking of a number. When I add 3 to my number, multiply the sum by 12, divide the product by 8, and subtract the result by 7, I get 11. What is the number I'm thinking of?'' |
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A. |
8 |
B. |
7 |
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C. |
10 |
D. |
9 |
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Hint |
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5. |
The sum of three consecutive even numbers is 54. Find the three numbers. |
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A. |
15, 16, 17 |
B. |
16, 17, 18 |
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C. |
16, 18, 20 |
D. |
18, 19, 20 |
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Hint |
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6. |
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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7. |
How could you use the graph of h = 20t – 6t2 to estimate the solution(s) of 20t – 6t2 = 7, where h stands for height and t stands for time? |
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A. |
Draw a horizontal line at h = 7 and find where it intersects the curve. |
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B. |
Draw a vertical line at t = 7 and find where it intersects the curve. |
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C. |
Draw a vertical line at t = 20 and find where it intersects the curve. |
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D. |
Draw a horizontal line at h = 20 and find where it intersects the curve. |
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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. |
(1, 1), (4, –2) |
B. |
(4, 1), (1, –2) |
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C. |
(–2, 4), (1, 1) |
D. |
(–2, 1), (1, 4) |
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Hint |
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