digital Copiers are opening up a new store and are in need of new copying machine. They are evaluting two models and need to choose one. Xerox WorkCentre copier cost $350 to purchase, result in electricity bills of $160 per year, and last for 5 years. Epson EcoTank copier cost $550, result in electricity bills of $120 per year, and last for 8 years. The discount rate is 21%. What is the equivalent annual cost of the Epson EcoTank model?