Please solve this problem analytically and take clear photo of solution showing all steps and calculations. please make sure the answer is correct

1. A special-purpose machine is being installed at a first cost of $150,000. The following table shows the expected annual operating costs, maintenance costs and salvage values for each year of service. If interest is 5% annually, what is the economic service life for this machine? Year of Operation Maintenance Cost for Cost for Year Year Service Salvage Value at End of Year 100000 1 2000 3000 90000 2 3 4 5 6 7 8 9 20000 30000 40000 50000 60000 70000 80000 90000 100000 110000 4000 5000 6000 7000 8000 9000 10000 11000 80000 70000 60000 50000 40000 30000 20000 10000 10