Stephen Spinelli, Inc. is considering investment in a machine to produce computer keyboards. The price of the machine is $400,000 and its economic life is five years. The machine will be depreciated to a value of zero over the five-year period. The machine will produce 10,000 units of keyboards each year. The price of the keyboards is $40 in the first year. It will increase at 5 percent per year. The production cost per unit of the keyboard is $20 in the first year, and it will increase at 10 percent per year. Corporate tax rate is 34%. The discount rate is 15 percent.

Show the excel formulas used to find the PV, NPV and IRR.