The miles that Mr. hill drove is 18 miles.
How many miles did Mr. Hill drive?
The equation that represents the total charge of the trip is: 30 = $3 + $1.5x
Where x represents the miles driven.
In order to determine the value of x, take the following steps:
Combine similar terms
30 - 3 = $1.5x
27 = $1.5x
Divide both sides by 1.5
x = 18 miles