Its an engineering economics subject question. Can anybody please help with by using excel.

in order for ABC Company to break even on this purchase? What is the EAC for a new bridge that has a rst cost of $85M, an annual operating cost of $1.5M, a useful life of 45 years, and an interest rate of 8%? Construct a spider plot and tornad: diagram of the EAC of the following conditions a. First cost ranges between 80% and 140% of base case b. Annual operating cost ranges between 80% and 120% of base case c. Interest rate ranges between 75% and 125% of base case