5-29. The Foundation to Support Surrealism will have a 3D full immersion Salvadore Dali exhibit, very much like the Van Gogh exhibit that took the country by storm in 2021, on loan for 3 years. As part of the conditions of the loan, a specialized alarm and security system must be installed. High Security Company will install a suitable system for a $50,000 initial payment and $2,500 per month in monitoring fees. Tight Security Company will install a suitable system for a $75,000 initial payment and $1,675 per month in monitoring fees. Both security systems would be used for 3 years. Assuming an annual discount rate of 9 percent with monthly compounding, which contract has the lowest net present cost?

Please help with the excel equations. Thank you!