er year. At an interest rate of 10% per year, should the defender be ears from now? Question 4 (5pts): System 1 First cost, $ NCF, $ per year System 2 12,000 3,000 8,000 1,000 (year 1-5) 3,000 (year 6-14) Maximum life, years 7 14 Problem: Use (a) no-return payback, (b) discounted payback at 15%, and (c) Pw analysis at 15% to select a system. Comment on the results