Question

Max’s car holds 18 gallons of gasoline. Driving on the highway, the car uses approximately 2 gallons per hour. Let h represent the number of hours Max has been riding on the highway. Write an expression that shows how many gallons of gasoline Max has left after driving h hours. Then find that number after Max drives 3.5 hours on the highway.

Answer 1

11 gallons

18=-2h h=3.5

Explanation:

-2(3.5)=18

18-7=11, he has 11 gallons of gas left

Answer 2

y=18 gallons

Explanation:

You can multiply how many hours he's been driving by the 2 gallons and subtract it from 18