Using present worth analysis, create a spider plot illustrating the limits of uncertainty for the following parameters `

Cash Flow Element Base Case First cost ($500,000 Annual Benefits $100,000 Salvage Value ($100,000) Interest 10% Horizon 20 years Variable Change % of base case Down to 80% Up to 150% Down to 60% Up to 120% Down to 70% Up to 130% Down to 70% Up to 120% Down to 75% Up to 150% Cash Flow Element Base Case First cost ($500,000 Annual Benefits $100,000 Salvage Value ($100,000) Interest 10% Horizon 20 years Variable Change % of base case Down to 80% Up to 150% Down to 60% Up to 120% Down to 70% Up to 130% Down to 70% Up to 120% Down to 75% Up to 150%