please solve in excel and also the functions that has been used

Question 3 (based on Chapter 9) A new machine will cost $80,000. The expected market value of the machine at the end of each year, and the annual maintenance costs are given in the table below. Assuming 8% cost of capital, what is the economic life of the machine? Year Market Value at the End Annual Maintenance Cost 9,000 80,000 65,000 55,000 47,500 2 8,000 9,000 11,000 5 42,500 37,500 30,000 14,000 18,000 Question 3 (based on Chapter 9) A new machine will cost $80,000. The expected market value of the machine at the end of each year, and the annual maintenance costs are given in the table below. Assuming 8% cost of capital, what is the economic life of the machine? Year Market Value at the End Annual Maintenance Cost 9,000 80,000 65,000 55,000 47,500 2 8,000 9,000 11,000 5 42,500 37,500 30,000 14,000 18,000