1. Recall Example 4.2 involving a theme park and two design alternatives.

Now we add a third design alternative, which requires an initial investment of $150,000 and will produce annual after-tax revenue represented by a decreasing gradient series, with a revenue of $45,000 the fi rst year and decreasing by $5,000 per year to a fi nal value of 0 in the last year. Which alternative has the smallest DPBP?