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OpenStudy (anonymous):
In a bike race, a rider covers a 5-mi flat stretch of a road at a speed of s mi/h. She then doubles her speed down a hill 1 mi long. Finally, she reduces her downhill speed by 12 mi/h as she rides the last 3 mi of the race. What function gives the time (t) it takes the rider to finish the race in terms of s?
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