Your firm needs a computerized machine tool lathe which costs $50,000 and requires $12,000 in maintenance for each year of its 3-year life. After three years, this machine will be replaced. The machine falls into the MACRS 3-year class life category, and neither bonus depreciation nor Section 179 expensing can be used. Assume a tax rate of 21 percent and a discount rate of 12 percent. If the lathe can be sold for $5,000 at the end of year