Mia Malkova earns $4500 monthly income. Her rent is $950.00 per month, her other bills are $250.00 per month, and her car loan requires a $480 per month. a) If Mia's food cost $150 per week and she estimates other additional expenses to be $250 per month, how much she will have left each month to reach her financial goals? b) Mia is considering buying a new car instead of the old one. Her new car loan will be $560 per month, and the insurance will increase by $250 per month. Mia estimates that her other-related expenses will remain the same. What is the opportunity cost if Mia purchases the new car? (Show your calculations)