Calculate the net present value and profitability index of each machine. Assume a 9% discount rate. (Round net present value to the nearest whole dollar, e.g. 5,275 and profitability index to 2 decimal places, e.g. 15.25. Enter negative amounts using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45). For calculation purposes, use 5 decimal places as displayed in the factor table provided.) Which machine should be purchased