life of each model is 5 years

A company is considering two models for a machine. The first machine has a first cost of $15,000 and a salvage value of $6,500. The operating and maintenance costs are expected to be $1500 per year decreasing by $350 each year thereafter. The annual revenues are expected to be $5,500. The second machine has a first cost of $25,000 and a salvage value of $12,500. The operating and maintenance costs are expected to be $500 per year increasing by 12% each year thereafter. The annual revenues are expected to be $6,700. Answer questions 1, 2, and 3, accordingly. 1. What is the IRR of each model? (Show detailed calculations) 2. Draw a net cash flow diagram for the increment investment analysis between the two machines 2 3 3. Based on the diagram in question 2, what is the expected RR of this increment investment? Which machine do you recommend? Knowing that MARR is 10% (Show detailed calculations)