a. A new operating system for an existing machine is expected to cost $750,000 and have a useful life of six years. The system yields an incremental after-tax income of $185,000 each year after deducting its straight-line depreciation. The predicted salvage value of the system is $18,600 b. A machine costs $390,000, has a $28,100 salvage value, is expected to last eight years, and will generate an after-tax income of $90,000 per year after straight-line depreciation. Assume the company requires a 10% 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 FVA of $1) (Use appropriate factor(s) from the tables provided.) Complete this question by entering your answers in the tabs below Required ARequired B A new operating system for an existing machine is expected to cost $750,000 and have a useful life of six years. The system yields an incremental after-tax income of $185,000 each year after deducting its straight-line depreciation. The predicted salvage value of the system is $18,600. (Round your answers to the nearest whole dollar.) Cash Flow Annual cash flow Residual value Select Chart Amount | x | PV Factor l , Present Value Net present value Required B> Required A