3) (Total 25 points) Suppose the cost of energy for a project is $14000 starting year 3 Beginning in year four, the cost increases by $3000 each year through year 20. Assume interest rate is 6% per year. a) (5 points) Draw the cashflow of costs. b) (15 points) What is the equivalent present worth in year O of these energy costs? c) (5 points) What is the equivalent uniform annual costs in years 1 to 20