For each of the following situations, identify the full cost (opportunity cost) involved:
a. A worker earning an hourly wage of $8.50 decides to cut back to part-time to attend Houston Community College.
b. Sue decides to drive to Los Angeles from San Francisco to visit her son, who attends UCLA.
c. Tom decides to go to a wild fraternity party and stays out all night before his physics exam.
d. Annie spends $200 on a new dress.
e. The Confab Company spends $1 million to build a new branch plant that will probably be in operation for at least 10 years.
f. Alex’s father owns a small grocery store in town. Alex works 40 hours a week in the store but receives no compensation.