Econo-Cool air conditioners cost $305 to purchase, result in electricity bills of $151 per year, and last for 5 years. Luxury Air models cost $505, result in electricity bills of $102 per year, and last for 8 years. The discount rate is 20%.

a. What is the equivalent annual cost of the Econo-Cool model? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

b. What is the equivalent annual cost of the Luxury Air model? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

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 equivalent annual cost of the Econo-Cool and Luxury Air model? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

d-2. Which model is more cost-effective? Econo-Cool Luxury Air

Also i did this correctly but it shows incorrect can u please check why ? pic below

Also i did this correctly it showa incorrect can u please check why uploaded pic

The following are the cash flows of two projects: Year Project A Project B 0 $(240) $(240) 1 120 140 2 120 140 3 120 140 4 120 If the opportunity cost of capital is 12%, what is the profitability index for each project? (Do not round intermediate calculations. Round your answers to 4 decimal places.) X Answer is complete but not entirely correct. Project Profitability Index A 1.5187 X B 1.4011