Hello can anyone please help me for this problem I need to use Excel to graph NPW as a function of interest rate, i , for values between 0% and 25%

Two hazardous environment facilities are being evaluated, with the projected life of each facility being 10 years. The company uses a MARR of 15%. Using rate of return analysis, which alternative should be selected? Alt. A Alt. B First cost $615,000 $300,000 O&M cost 10,000 25.000 Annual benefits 158,000 92,000 Salvage value 65,000 -5,000