2–30. The school is having a happy hour on Friday. If you go, you will get two free drink tickets and snacks, for which you would normally pay $15. However, you will have to pay

$10 for the cab fare home. You also have a free student ticket to the local profession team’s soccer game. There is no resale value, as free tickets are still available.

a. What is the opportunity cost of going to the soccer game?

b. If you would not normally pay to go to the soccer game, which will you choose?