A company must decide between two new machines. The first machine has an initial cost of 45000 with an estimated life of 12 years and a salvage value of 8000. Its annual operating cost is 4000. The second machine has an initial cost of 30000, the same estimated life with a salvage value of 0. Its annual operating cost is 3000. The interest rate environment causes an MARR of 6 % per year. What is the annual worth of each machine? What decision rule should be used for determining the preferred machine? Which machine is recommended