72-75: Gas Mileage. Answer the following practical gas mileage questions. 73. Two friends take a 3000-mile cross-country trip together, but they drive their own cars. Car A has a 12-gallon

gas tank and averages 40 miles per gallon, while car B has a 20-gallon gas tank and averages 30 miles per gallon. Assume both drivers pay an average of $2.55 per gallon of gas. a. What is the cost of one full tank of gas for car A? For car B? b. How many tanks of gas do cars A and B each use for the trip? c. About how much do the drivers of cars A and B each pay for gas for the trip?