The Minneapolis–St. Paul Metropolitan Airports Commission (MAC) is a government agency that owns and operates the Minneapolis–St. Paul International Airport. The vast majority of flights leave between 6:00 a.m. and 10:00 p.m., but within that range, some time periods—such as between 1:00 p.m. and 2:00 p.m.—have many more departures than others—say, between 9:00 p.m. and 10:00 p.m. The price of a departure is the same throughout the day: $2.73 per 1,000 pounds of weight. Because it is a government agency, the MAC might not run the airport to maximize profit. Suppose, however, that the MAC’s Board of Commissioners decides it wants to run the airport more like a business and hires you as a consultant to maximize the MAC’s net revenue

(the term that nonprofit organizations use for their profit, their total revenue minus total cost). Assuming that the board tells you that changing the size of the airport is out of the question, what suggestions would you make to maximize net revenue?