Consider the investment projects, in Table P5.9 all of which have a four-year investment life:
(a) Compute the net present worth of each project at i = 10%.
(b) Plot the present worth as a function of the interest rate (from 0% to 30%) for project B.

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Project's Cash Flow ($) nA 0 $3,5006.500 $2800 4,300 0 1,600 1,8001,000 1,900 1,500 2,500 2,300 4 4.200 2,200 3,500 1,500 1,800 900