please show work in excel

05.01-PR020 WP Alpha Electronics can purchase a needed service for $90 per unit. The same service can be provided by equipment that costs $100,000 and that will have a salvage value of 50 at the end of 10 years. Annual operating costs for the equipment will be $7,000 per year plus $25 per unit produced. MARR is 12%/year. a. Based on an annual worth analysis, should the equipment be purchased if the expected production is 200 units/year? b. Based on an annual worth analysis, should the equipment be purchased if the expected demand is 500 units/year? c. Determine the breakeven value for annual production that will return MARR on the investment in the new equipment