I have no idea how to do this.

a. A new operating system for an existing machine is expected to cost $718,000 and have a useful life of six years. The system yields an incremental aftertax income of $210,000 each year after deducting its straightline depreciation. The predicted salvage value of the system is $70,000. b. A machine costs $500,000, has a $44,000 salvage value, is expected to last eight years, and will generate an aftertax income of $120,000 per year after straightline 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 factorts) from the tables provided.) Complete this question by entering your answers in the tabs below. Required A Required B A new operating system for an existing machine is expected to cost $718,000 and have a useful life of six years. The system yields an incremental aftertax income of $210,000 each year after deducting its straightline depreciation. The predicted salvage value of the system is $70,000. (Round your answers to the nearest whole dollar.) Annual cash flow Residual value Net present value Required B ) a. A new operating system for an existing machine is expected to cost $718,000 and have a useful life of six years. The system yields an incremental aftertax income of $210,000 each year alter deducting its straightline depreciation. The predicted salvage value of the system is $70,000. b. A machine costs $500,000, has a $44,000 salvage value, is expected to last eight years, and will generate an aftertax income of $120,000 per year after straightline 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 PVA of $_1) (Use appropriate factorts) from the tables provided.) Complete this question by entering your answers in the tabs below. Required A Required B A machine costs $500,000, has a $44,000 salvage value, is expected to last eight years, and will generate an aftertax income of $120,000 per year after straightline depreciation. (Round your answers to the nearest whole dollar.) Annual cash flow Restdual value Net present value