Jack leaves Detroit at 2:00 P. M. and drives at a constant speed. He passes Ann Arbor, 40 mi from Detroit, at 2:50 P. M. Find a function that models the distance in miles he has traveled after t min.

D = Distance =Speed(S) x Time

S = 40 / (50 / 60 == 48 his Speed in mph

D =48 x (t minutes / 60) - distance he travels in t minutes.