The management of Iroquois National Bank is considering an investment in automatic teller machines (ATMs). The machines cost $124,200 and have a useful life of 7 years. The bank's controller has estimated that the ATMs will save the bank $27,000 after taxes each year. Compute the payback period for the proposed investment (Points 2.0)? 4.6 124,200/ 29,000 If the internal rate of return (IRR) equals the cost of capital, what is the net present value (NPV) of an investment (Points 2.0)? f) g) List and explain the five components of interest rates (Points 2.5)