The maintenance cost of Ford Manufacturing Plant, Dearborn, Michigan will increase according to an arithmetic gradient beginning in year 3, due to global warming. In the current year (year O), the cost is $550,000 and it will be $550,000 again in year 1 and 2, but then are estimated to increase by $40,000 each year through year 12 starting from year 3. If the interest rate is 11% per year, what will be the equivalent annual worth in years 1 to 12 of these maintenance costs? Draw the cash flow diagrams