4 Consider the following four equipment, use present worth analysis to decide which one to buy if MARR is 12% per year Equipment 2 $7,500,000 $15,000 Equipment 3 Equipment 4 $8,500,000 $15,000 Equipment $9,000,000 $12,000 Options Initial Cost $7,800,000 $10,000 Annual saving on maintenance S 250,000 $6,000 Annual Operating Cost Salvage Value $200,000 $220,000 $8,000 $280,000 $10,000 $6,500 Life 8 6 6 4