A tractor for over-the-road hauling is to be purchased by AgriGrow for $78,000. It is expected to be of use to the company for 6 years, after which it will be salvaged for $3,200. Transportation cost savings are expected to be $130,00 per year; however, the cost of drivers is expected to be $50,00 per year, and operating expenses are expected to be $35,000 per year, including fuel, maintenance, insurance, and the like. The company's marginal tax rate is 25 percent, and MARR is 10 pereent on after tax cosh flows. Suppose that, to AsriGrow's surprise, they actually dispose of the troctor at the end of the fourth tax year for 5 5,200. Develop tables using a spreadsheet to determine the ATCF for each vear and the after-tax PW, AW, IRR, ond ERR after only 4 years