What expresion that represents the total amount of time Steve and Sally spent paddling? Explain reasoning.
Steve and Sally went canoeing on Red river on a day when the current flowed at 3mi/h. They left at 8:30 A.M and paddled upstream until they reached Elk Island, where they stopped to have lunch. After an hour and a half, Steve and Sally got back in their canoe and paddled downstream, returning to their starting at 4:00 P.M. They paddled a total of 24mi during the day.
What expression that represents the total amount of time Steve and Sally spent paddling? Explain reasoning.
A. 12/x-3 B. 12/x-3+12/x
C. 12/x-3 +12/x+3 D. 12/(x-3)(x+3)
E. 24x/x^2-9 F. 24x/x^2-6x-9
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