A machine which can be used to produce an aircraft part from titanium has an initial cost of $140000 (initial investment at year 0) with annual operating cost of $25,000 and revenue of $75,000 per year starting 4 years from now. In year 5, $8000 was given to the company by Environmental Protection Agency as credit for its environmental compliance. What is the payback period at a) 0% b) 12% Given the two guesses for x number of years to be 3 yrs and 4 yrs at 12 % starting from the 4th year. Ensure you draw one cash flow diagram for the two interest rates. A public-private initiative in Texas will significantly expand the wind-generated energy thoug out the state. The cash flow for one phase of the project involving Central Point Energy, a trans- mission utility company, is shown. Given reinvestment rate of 18% per year for excess funds and 10 % per year for borrowing rate for extra funds, determine: given MARR - 15% Year Net cash flow +48000 +20000 -90000 +50000 -10000 +5000 a) How many number of ROR values is expected and why? b) Calculate the external rate of return (MIRR). c) Is the project economically viable