Question

Sarah is driving. Her distance in km from Tempe after t hours of driving is given by x = D(t) = 13 + 57t.

a. Determine a formula in terms of x for t=D−1(x) .

Answer 1

The distance in km from Tempe after t hours of driving is given by

x = D(t) = 13 + 57t.

We just need to find the value t function of x

x = 13 + 57*t

x -13 = 57*t

57*t = x -13

t = (1/57)*x -(13/57)

We can see the plots of both equation in the picture below.