the total cost. re, and the Marcus family is planning a trip. Help them determine Getting there: The Marcus family is going to drive since airfare is quite expensive. Their family vehicle has an 18-gallon gas tank and can travel 30 miles on one gallon of gas. The trip is 870 miles, one way. How many miles do they travel there and back? If they can travel 30 miles on one gallon of gas, and their family car has an 18-gallon tank, how many miles can they travel on one tank of gas? 540 How many gallons of gas will their family need to travel the number of miles in the trip (round trip)? Gas will cost an average of $2.15 per gallon. How much will their family spend on gas? Staying there: The Marcus' will spend 7 nights in a hotel during their vacation. • The cost for one night in the hotel is $249.99. What is the total cost for all 7 nights? Oops, don't forgot to add in sales tax, which is 7%. What is the final cost? . One more thing - It costs $12.75 per night to park a car on the lot. How much will they spend just in parking? • What is the total hotel cost? (room, tax & parking) ​