3.5 Ace Alexia plays professional tennis for a living, but in spite of her big first serve, she is not very successful. During the last year, Ace could have earned $75,000 as a tennis instructor at the Atlanta Tennis Club. She would have spent $7,000 on meals, paid rent on a condo in Atlanta at $800 per month, and made car payments of $300 per month. Instead, she remained a pro and won $100,000 in prize money in various tournaments around the country. In doing so, she spent $20,000 on transportation and lodging and paid her coach/trainer $15,000 for the year. She also spent $7,000 on meals, paid rent on her condo in Atlanta at $800 per month, and made the payments on her car of $300 per month.

a. Would Ace’s total income minus her costs

(her net income) be larger if she became a tennis instructor than if she played professional tennis? Provide calculations to support your answer.

b. What was Ace’s opportunity cost of playing tennis last year?