A supermarket can purchase an automated checkout machine for $100,000 (to be paid in year 0) that has an estimated life of 5 years. Servicing and maintenance over that period will begin at $2,500 per annum (at the end of year 1) and increase at a 10% rate every year. If the checkout machine is purchased, the supermarket will not be required to hire one additional checkout operator. The checkout operator costs $28,000 per year (assume this is also at the end of each year beginning with year 1), and this amount is expected to increase at 5% annually. If the supermarket's cost of capital is 10%, which alternative should be selected. Assume all annual cashflows occur Help at the end of each year Fill in your answer here 3 2 After reading the fine print in your credit card agreement, you find that the "low" interest rate is actually an 18% APR, or 1.5% per month. Now, to make you feel even worse, calculate the effective annual interest rate. Fill in your answer here Help 3 Why should bond investors be cautious when relying on yield to maturity? Is it an accurate measure of rate of return for investors who might not hold their bonds to maturity? Fill in your answer here Help