Elgin Restaurant Supplies is analyzing the purchase of manufacturing machine that will cost $21,000. The annual ca follows. Use Appendix D. Year 1 IRR 2 3 a. Determine the IRR using interpolation. (Do not round PV factor. Round other intermediate calculations to the r dollar. Round the final answer to 2 decimal places.) Cash Flow $10,000- 9,500 7,500 O Yes O No % b. With a cost of capital of 13 percent, should the machine be purchased? c. With information from part b, compute the Profitability Index. (Do not round PV factor. Round other intermediat the nearest whole dollar. Round the final answer to 3 decimal places.) Profitability Index