you have the opportunity to purchase a rare motorcycle for $10,000. due to the soft market, the resale is expected to be $3,000 next year, but will rise by $500 per year thereafter. the maintenance cost of the bike is $300 per year for each of the first 3 years, but then is expected to double each year. for instance, the fourth-year maintenance cost will be $600. the fifth-year maintenance cost will be $1,200, etc. based on your 15% before-tax marr, what life of this motorcycle has the lowest euac?