A friend of yours bought a small apartment building for $100,000 in a college town. She spent $10,000 of her own money for the building and obtained a mortgage from a local bank for the remaining $90,000. The annual mortgage payment to the bank is $10,500. Your friend also expects that annual maintenance on the building and grounds will be $15,000. There are four apartments (two bedrooms each) in the building that can each be rented for $360 per month. Refer to the seven-step procedure in Table 1-1 (left-hand side) to answer these questions: