Solve.From a point on a river, two boats are driven in opposite directions, one at 10 miles per hour and the other at 6 miles per hour. In how many hours will they be 48 miles apart?
A. 3 hr
B. 8 hr
C. 12 hr
D. 6 hr
Answer: A
Mathematics
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Solve the problem.Let f(x) compute the cost of a rental car after x days of use at $32 per day. What is the interpretation of the solution of 
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Mathematics