18. Problem 12.18 (Scenario Analysis) eBook Your firm, Agrico Products, is considering a tractor that would have a cost of $35,000, would increase pretax operating cash flows before taking account of depreciation by $13,000 per year, and ver 5 years at the rate of $7,000 per year, beginning the first year. (Thus, annual cash flows would be $13,000 before taxes plus the tax savings that result from $7,000 of depreciation.) The managers are having a heated debate about whether the tractor would actually last 5 years. The controller insists that she knows of tractors that have lasted only 4 years. The treasurer agrees with the controller, but he argues that most tractors actually do give 5 years of service. The service manager then states that some last for as long as 8 years, Assume that if the tractor only lasts 4 years, then the firm would receive a tax credit in Year 4 because the tractor's salvage value at that time is less than its book value. Under this scenario, the firm would not take depreciation expense in Year 5. Given this discussion, the CFO asks you to prepare a scenario analysis to determine the importance of the tractor's life on the NPV. Use a 40% marginal federal-plus-state tax rate, a zero salvage value, and a 12% WACC. Assuming each of the indicated lives has the same probability of occurring (probability = 1/3), what is the tractor's expected NPV? Do not round intermediate calculations. Negative values, if any, should be indicated by a minus sign. Round your answers to the nearest cent. a. Tractor's NPV if actual life is 5 years. b. Tractor's NPV if actual life is 4 years. c. Tractor's NPV if actual life is 8 years. d. Tractor's expected NPV