A rental agency to rent a car 220 vehicles per day, at a rate of $ 31 per day. For every $ 1 increase in the daily rate, less than 5 cars are rented. How fast cars must be hired to produce the maximum income and what is the most money?
A rental agency to rent a car 220 vehicles per day, at a rate of $ 31 per day. For every $ 1 increase in the daily rate, less than 5 cars are rented. How fast cars must be hired to produce the maximum income and what is the most money?