Question

A parking garage charges $3 for each of the first three hours. After three hours, the charge is $7 an hour. What is the total cost for five hours of parking?

Which strategy that would help solve this word problem?
Write the equation (3 mc003-1.jpg $3) + (5 mc003-2.jpg $7) = total cost of five hours.
Write the equation (3 mc003-3.jpg $3) + (2 mc003-4.jpg $7) = total cost of five hours.
Write the equation (3 mc003-5.jpg $3) mc003-6.jpg (5 mc003-7.jpg $7) = total cost of five hours.
Write the equation (5 mc003-8.jpg $3) – (3 mc003-9.jpg $7) = total cost of five hours.