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# Assume that a machine has a useful life of 20 years, and it loses its value in a "straight line"(i. one-twentieth of the original value per year).

**Assume that a machine has a useful life of 20 years, and it loses its value in a "straight line"(i.e. one-twentieth of the original value per year). At a 14% interest rate, and including depreciation in the calculation, over a two-year period, what must a $150,000 investment at least earn to be economically viable?**