Please solve by hand!

A graduate of an engineering economy course has compiled the following set of estimated costs and salvage values for a proposed machine with a first cost of $15,000; however, he has forgotten how to find the most economic life. Your task is to show him how to do this by calculating the equivalent annual cost (EAC) for n=8, if the minimum attractive rate of return (MARR) is 15%. A graduate of an engineering economy course has compiled the following set of estimated costs and salvage values for a proposed machine with a first cost of $15,000; however, he has forgotten how to find the most economic life. Your task is to show him how to do this by calculating the equivalent annual cost (EAC) for n=8, if the minimum attractive rate of return (MARR) is 15%