Martha's Bakery wants to expand their current operations and is looking to buy new oven. They are currently evaluating two oven models: Empava single electric wall and Frigidaire freestanding. Empava single electric wall oven cost $385 to purchase, result in electricity bills of $167 per year, and last for 5 years. Frigidaire freestanding oven cost $585, result in electricity bills of $134 per year, and last for 8 years. The discount rate is 22%. a. What is the equivalent annual cost of the Empava single electric wall model? (Do not round intermediate calculations. Round your answers to 2 decimal places.) Empava Equivalent annual cost b. Which model is more cost-effective? Empava single electric wall O Frigidaire freestanding