Solve the polynomial inequality and graph the solution set on a number line.x2 + 8x ? 0
A. [0, ?)
B. (-?, -8]
C. [-8, 0]
D. (-?, -8] ? [0, ?)
Answer: D
Mathematics
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Find the length of the curve.The curve r = a cos2 
, 0 ? ? ? ?, a > 0
A. 2a
B. 
C. 2?a
D. 
Mathematics
Convert. Round to the nearest tenth unless otherwise indicated.The temperature was recorded at 46°C. What is this temperature in degrees Fahrenheit?
A. 17.5°F B. 114.8°F C. 140.4°F D. 57.6°F
Mathematics
Solve the problem. Write ratios in lowest terms.A certain lake is 1000 feet deep. A nearby lake is 1100 feet deep. Write the ratio of the first lake's depth to the second lake's depth.
A. 
B. 
C. 
D. 
Mathematics
Divide.325 ÷ 23
A. 14 B. 12 R 7 C. 13 R 14 D. 14 R 3
Mathematics