Use formulas to solve the following questions (not table)

X1= 140$ ,X2=3% Question(4): A power plant is being considered in the dead sea location. For an initial investment of SX1 million, annual net revenues are estimated to be S15 million in years 1-5 and $20 million in years 6-20. Assume no residual market value for the plant. a. What is the simple payback period for the plant? 5. What is the discounted payback period when the MARR is x2% per year? c. Using an equivalency technique (FW, PW, or AW), MARR is x2% per year, would you recommend investing in this project