Econo-Cool air conditioners cost $350 to purchase, result in electricity bills of $200 per year, and last for five years. Luxury Air models cost $550, result in electricity bills of $150 per year, and last for eight years. The discount rate is 21%. a. What is the equivalent annual cost of the Econo-Cool model? b. What is the equivalent annual cost of the Luxury Air model? c. Which model is more cost-effective? d. If the inflation rate is expected to be 10% per year for the foreseeable future. What is the equivalent annual cost of the Econo-Cool model and Luxury Air model? Note: Do not round intermediate calculations. Round your answers to 2 decimal places. a. EAC(Econo-Cool Investment and Electricity) b. EAC(Luxury Air Investment and Electricity) c. Cost effective model d. EAC(Econo-Cool Investment and Electricity) d. EAC(Luxury Air Investment and Electricity)

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