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Mathematics 15 Online
OpenStudy (anonymous):

in a bike race, a rider covers a 5-mi flat stretch of road at a speed of x 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 she 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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