Solve the inequality by using the method of your choice. State the solution set in interval notation and graph it.x2 + 12x + 20 ? 0
A. (-?, 2] ? [10, ?)
| 2? | 10 |
B. (-?, -4] ? [10, ?)
| -4 | 10 |
C. (-?, -2] ? [10, ?)
| -2 | 10 |
D. (-?, -10] ? [-2, ?)
| -10? | -2 |
Answer: D
Mathematics
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Solve the problem.Your electrical bill states that you used 840 kilowatt-hours of energy in September. Determine your average power use, in watts.
A. 1400 watts B. 1166.7 watts C. 1129 watts D. 1283.3 watts
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Multiply.-1 ? 15
A. - 
B. 15
C. -1
D. -15
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Write the following as an algebraic expression in u, u > 0.tan 
A. 
B. 
C. 5u
D. 
Mathematics
Solve.As the relative humidity increases, the temperature seems higher than it is. The formula T = 0.103x + 73.39 approximates the apparent temperature for an actual temperature of 
where x is the relative humidity. What is the apparent temperature (to the nearest degree) for a relative humidity of 30%?
A. 103°F B. 73°F C. 76°F D. 227°F
Mathematics