2. Calculate/estimate the IRR(s) for a 6-year project with the following cash flows: Co=-50, C=28 =C2=C3=C:=Cs, and Co=-93. In Excel, plot the NPV against r (=discount rate), using r=0%, 2%, and so on (a 2% increase each time) until you find all IRRs in the chart. Identify/estimate all IRRs