Write the inequality in interval notation.-9 ? x ? 7
A. [-9, 7]
B. [-9, 7)
C. (-9, 7)
D. (-9, 7]
Answer: A
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Use percents, percent equations, and/or percent proportions to solve the application.A community college raises its tuition from $330 per course to 
per course. What is the percent increase? Round to the nearest tenth of a percent, if necessary.
A.
| 93.3% |
B.
| 6.3% |
C. 6.7%
D.
| 93.7% |
Find an approximate equation of the line passing through the two given points. Round the slope and the constant term to two decimal places.(-1.58, -3.31) and (5.79, 2.64)
A. y = -0.16x - 3.56 B. y = 0.81x - 2.05 C. y = 1.24x - 2.52 D. y = 0.81x - 3.17
Find the sum.[13 + (-8)] + [10 + (-18)]
A. 49 B. -3 C. 13 D. -23
Add or subtract, if possible. Assume that all variables represent non-negative values and be sure to simplify your answer.18
- 3
+ 2
A. 9
+ 18
B. 9
+ 6
C. 18
- 3
+ 18
D. 15
+ 6