Calculate the net present value (NPV) and annual equivalent value (AE) of the cash flow diagram below (7 years, amounts below). The Minimum Acceptable Rate of Return (MARR) is 15%. Calculate the IRR for the cash flow diagram. Show 2 iterations of hand calculations relatively close to final value before using a method such as Excel. Calculate the ERR for the cash flow diagram. Determine whether an investment made according to this cash flow is more profitable than "doing nothing" and just collecting the MARR. Explain your answer. Are you really "doing nothing" if you don't go forward with the investment