Question

Write an expression for the following situation: A car is using 2.5 gallons of gas for every hour that it is driving on the highway and the gas tank holds 30 gallons.
Answer choices:
2.5 h - 30
30 + 2.5 h
30 - 2.5 h

Answer 1

Late response, but in case you still need this:

it uses 2.5 gallons per hour
so after (h) hours it uses 2.5*h gallons

subtract this from the origininal 30 gallons to get the gallons left