A project requires an up-front investment of 20,000 and provides cost savings of 3000 after two years, and then 3000 each year thereafter. Find the discounted payback period when the MARR = 10%.

a) Calculate the net present value of the project
b) Determine the payback period using discounted cash flows
c) Apply the MARR to adjust the cash flows
d) Use the internal rate of return to assess the project viability