SOLUTION: Tom walks at an average speed of 8km/hr. The distance [d(t)] his walks can be represented by the function d(t)=8t where t is the time in hours. a) Calculate d(4.25) b) Calculate

Question 1086094: Tom walks at an average speed of 8km/hr. The distance [d(t)] his walks can be represented by the function d(t)=8t where t is the time in hours.
a) Calculate d(4.25)
b) Calculate t if he walks a distance of 4 km
Answer by ikleyn(52932) (Show Source): You can put this solution on YOUR website!
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Tom walks at an average speed of 8km/hr. The distance [d(t)] his walks can be represented by the function d(t)=8t where t is the time in hours.

a) Calculate d(4.25)                               d(4.25) = 8*4.25 = 34 km.   (Simply substitute t= 4.25 into the formula d(t) = 8t).

b) Calculate t if he walks a distance of 4 km.     8*t = 4  ====>  t =  =  of on hour = 30 minutes.

Solved.

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