Consider the proposed capital investment in an engineering project. Proposed capital investment: $110,000 Salvage value (end of year four): 0 Annual expenses per year: $10,000 . Gross revenues per year: $85,000 Depreciation method: GDS Property Class year: 3 Effective income tax rate (t): 45% After-tax MARR (1): 12% The study period is 4 years. determine (a) after-tax AW