Solve the problem.Candy and Delvis are riding bicycles in the same direction. Candy rides at a speed of 3 miles per hour, and Delvis rides at a speed of 9 miles per hour. If they started at the same place (and at the same time), then after 5 hours what is the distance between them?
A. 27 miles
B. 31 miles
C. 39 miles
D. 30 miles
Answer: D
Mathematics
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A. -2 B. -5 C. 5 D. 2
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Perform the indicated operation. 
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