Question

Martina is driving on a highway. She uses one gallon of gas every 30 miles she drives. The distance, D (in miles), she travels on g gallons of gas is given

by the following function.
D (g) = 30g
How far does Martina drive if she uses 3 gallons of gas?

Answer 1

90 miles

Explanation:

First the formula is solving for distance in miles. and is says distance = 30 x gallons. So if it's asking for how far she drives with 3 gallons, it's asking for her distance driven when using 3 gallons of gas. So the formula would be D = 30g. D = 30 x 3 is the formula, we have to put in 3 for g. When we do 30 x 3 we would get our answer as 90. Therefore our final answer is 90 miles.