Econo-Cool alr conditioners cost $350 to purchase, result In electricity bills of $160 per year, and last for 5 years. Luxury Air models cost $550, result in electricity bills of $120 per year, and last for 8 years. The discount rate Is 21% a. What Is the equivalent annual cost of the Econo-Cool model? (Do not round intermediate calculations. Round your answers to 2 decimal places.) Econo-Cool Equivalent annual cost b. What Is the equivalent annual cost of the Luxury Alr model? (Do not round intermedlate calculations. Round your answers to 2 decimal places.) Luxury Air Equivalent annual cost c. Which model is more cost-effective? Econo-Cool Luxury Air d-1. Now you remember that the Inflation rate is expected to be 10% per year for the foreseeable future. What is the equlvalent annual cost of the Econo-Cool and Luxury AlIr model? (Do not round intermediate calculations. Round your answers to 2 decimal places.) Luxury Air Econo-Cool Equivalent annual cost d-2. Which model is more cost-effective? Econo-Cool XurMAir