Samir is driving on a long road trip. He currently has 9 gallons of gas in his car. Each hour that he drives, his car uses up 1 gallon of gas. How much gas would be in the tank after driving for 5 hours? How much gas would be left after t hours?
Gas left after 5 hours:
Gas left after t hours:
Gas left after 5 hours: 9 - (1 * 5) = 9 - 5 = 4 gallons
Gas left after t hours: 9 - (1 * t) = 9 - t gallons