The cost information for three waffle machines is shown below. Each of these machines will last 5 years and will have no salvage value. Assume that you can sell waffles for $1.50 a piece.
a) Create a graph showing NPV vs. interest rate for these alternatives. Show the plot from i=0% to i=100%.
b) Create a best choice table. Use goal seek to find exact interest rates.
c) If your MARR is 8%, what should you do?