a. A new operating system for an existing machine is expected to cost $ 710,000 and have a useful life of six years. The system yields an incremental after-tax income of $290,000 each year after deducting its straight-line depreciation. The predicted salvage value of the system is $17,200. b. A machine costs $570,000, has a $32,600 salvage value, is expected to last eight years, and will generate an after-tax income of $74.000 per year after straight-line depreciation Assume the company requires a 12% rate of return on its investments. Compute the net present value of each potential investment. (PV of $1 FV of $1. PVA of $1 and EVA of S1) (Use appropriate factor(s) from the tables provided.) Complete this question by entering your answers in the tabs below. Required A Required B A machine costs $570,000, has a $32,600 salvage value, is expected to last eight years, and will generate an after-tax income of $74,000 per year after straight line depreciation. (Round your answers to the nearest whole dollar.) Select Chart Amount X PV Factor Cash Flow Annual cash flow Residual value Present Value $ 0 Not present value