If workers in the auto industry were unionized as auto workers, regardless of their specific jobs in the plant, this union would be called a(n)

When a firm makes zero economic profit, it means that: a. the firm is covering implicit costs alone

b. the firm is covering the total opportunity costs of its resources. c. the firm is covering explicit costs alone. d. the firm is running at an accounting loss.

Along a straight-line production possibilities curve:

a. the opportunity cost of production of a good is zero b. the opportunity cost of production of a good falls as its output increases. c. the opportunity cost of production of a good rises as its output increases. d. the opportunity cost of production of a good is constant.