7. Using an interest rate of 8.5%, what is the estimated equivalent uniform annual cost of operating equipment that costs 210,000 to purchase for 4 years based on the estimated operating cost and market value of the machine? Year 1 2 3 4 5 Operating Cost 95,000 106,000 120,000 135,000 98,000 Market Value 150,000 95,000 65,000 45,000 15,000