6. Lindsay is travelling to the east coast and her car has a 37 L gas tank. If her trip will require 215 L of gas, how many gallons of gas will she need for the trip? How many full tanks of gas will the trip require? (A 13) 7. A room is 10 ft by 13 ft. Trevor will buy carpet and underpad for the room from a discount supplier. He will then contract a local installer to lay the carpet and underpad. The carpet costs (A 15) $6.85 per square foot and the underpad costs $0.70 per square foot. The installation costs $2.85 per square foot. What is the total cost for the materials and installation?