Please, solve by hand, and on Excel

2. NASA is considering two materials for use in a space vehicle. The costs are shown below. Which should be selected on the basis of a present worth comparison at an interest rate of 4% per year? Show your equations and solve problem using factors: (30 points). Solve it in Excel, too. Martial JX Material KZ First Cost, $ -210,000 -250,000 Maintenance Cost, $/year-30,000 -25,000 Salvage Value, $ 2,000 20,000 Life years