Question

REALLY NEED HELP!!

Answer 1

In a bike race, a rider covers a 5-mi flat stretch of 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 for the rider to finish the race in terms of s.

Answer 2

Time = distance divided by speed
t=ds
t1=5x
t2=12x
t3=12x−12


The required expression is:

T(total)=5x+12x+12x−12

Answer 3

lol..

Answer 4

Thanks so much

Answer 5

Anytime.