Answer:
200 miles
Explanation:
To find the amount of driving where the two plans cost the same, we need to set up an equation and solve for the number of miles driven.
Let's denote the number of miles driven as 'x'.
For the first plan, the cost is given by: $40 + $0.70x (initial fee plus cost per mile).
For the second plan, the cost is given by: $0.90x (cost per mile only).
To find the point where the costs are the same, we equate the two expressions:
40 + 0.70m = 0.90m
40 = 0.90m - 0.70m
40 = 0.20m
40 / 0.20 = m
200 = m
This means the plans will cost the same at 200 miles