Unit 3 Test Quad 1 2021.pdf l 5. A large car dealership has been selling used cars for $6000 each. Sales have been averaging 80 cars per month. Because of ination. the price of a used car is going to be increased. The marketing manager has determined that for every $100 increase, there will be one less car sold each month. What should the new price be to ma'ItEmfze revenue? Let x represent the number of $100 increases, and let R represent the revenue