Elgin Restaurant Supplies is analyzing the purchase of manufacturing machine that will cost $70,000. The annual cash inflows are as follows. Use Appendix D. a. Determine the IRR using interpolation. (Do not round PV factor. Round other intermediate calculations to the nearest whole dollar. Round the final answer to 2 decimal places.) IRR % b. With a cost of capital of 17 percent, should the machine be purchased? Yes No c. With information from part b, compute the Profitability Index. (Do not round PV factor. Round other intermediate calculations to the nearest whole dollar. Round the final answer to 3 decimal places.) Profitability Index Present Value of an Annuity of $1,PVIFAPVA=A[i1(1+i)n1]=A[i1(1+i)n]