Help with calculations please

A forklift will last for only 4 more years. It costs $6,500 a year to maintain. For $20,000 you can buy a new lift that can last for 10 years and should require maintenance costs of only $3,500 a year. a-1. Calculate the equivalent cost of owning and operating if the discount rate is 4% per year? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Equivalent cost 2465.82 a-2. Should you replace the forklift? Yes O No b-1. Calculate the equivalent cost of owning and operating if the discount rate is 14% per year? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Equivalent cost $ 3465.82 b-2. Should you replace the forkl Yes No