Jefferson Labs, a taxpaying entity, estimates that it can save $29,000 a year in cash operating costs for the next 8 years if it buys a special-purpose ey $115,000. No terminal disposal value is expected. Jefferson Labs' required rate of return is 12%. Assume all cash flows occur at year-end except for in Jefferson Labs uses straight-line depreciation. The income tax rate is 38% for all transactions that affect income taxes. ble table +1 table 1 table. 1. Calculate the following for the special-purpose eye-testing machine: a. Net present value b. Payback period C. d. e. Internal rate of return Accrual accounting rate of return based on net initial investment Accrual accounting rate of return based on average investment