Please help me ASAP

6. An airport is located next to a housing development, where f is the number of flights per day and h is the number of houses in the housing development. Prots of the airport are given by: 36f f2 Prots of the home developer are given by: 39!: h: fh Hour man),r ights per day are there If the airport and the housing development are merged into one profit-maximizing company? (8 points}