Consider an economy made up of 100 people, 50 of whom hold jobs, 10 of whom are looking for work, and 15 of whom are retired. The unemployment rate is approximately:

In the scenario above, as a result of increased advertising, Talbot's average total cost

A) falls by $20 per coat. B) rises by $50 per coat. C) rises by $30 per coat. D) falls by $40 per coat.

Which of the following probably has the shortest long run?

a. a law firm b. a steel mill c. an automobile plant d. a tire factory e. an aircraft engine factory