You are funding a maintenance endowment (a fund which in which money is invested from which future maintenance expenses are made. The maintenance costs are expected to be $40,000 each year for the first five years, $50,000 for each of years 6 through 10 and $60,000 per year thereafter The building has an indefinitely long service life.) The money is invests at 13% compounded annually. How much must the investment be to pay the maintenance requirements?. What is the equivalent annual maintenance cost over the infinite service life