Suppose poland produces only tablets and smartphones. the resources that are used in the production of these two goods are not specialized—that is, the same set of resources is equally useful in producing both smartphones and tablets. the shape of poland's production possibilities frontier (ppf) should reflect the fact that as poland produces more smartphones and fewer tablets, the opportunity cost of producing each additional smartphone

You are evaluating two different silicon wafer milling machines. the techron i costs $285,000, has a three-year life, and has pretax operating costs of $78,000 per year. the techron ii costs $495,000, has a five-year life, and has pretax operating costs of $45,000 per year. for both milling machines, use straight-line depreciation to zero over the project’s life and assume a salvage value of $55,000. if your tax rate is 24 percent and your discount rate is 11 percent, compute the eac for both machines.