M6.7A real estate developer is planning to build an apartment building near a major University. The requires square for each ofthe four types of units in the apartment building as well as the expected rental income for each of the four types is shown in the table below. Local building ordinances do not allow the developer to build more than 40 units in this building and restrict the building to a maximum of 40,000 square feet. These ordinances also limit the maximum number of each unit type. The developer has already agreed to lease five onebedroom units and eight twobedroom units to a local rental agency that is a "silent partner" in this project. ROOM TYPES Efficiency 1-Bedroom 2- Bedroom S-Bedroom Minimum square feet . 500 700 800 1000 reqUIred Monthlv rental income $350 $450 $550 $750 Maximum unit type 40 15 22 10