Just as the aggregate-demand curve slopes downward only in the short run, the trade-off between inflation and unemployment holds only in the long run

Which of the following types of insurance do men pay lower premiums than do women?

A) life insurance B) health insurance C) auto insurance D) There are no legally allowed differences.

Which of the following would be considered a variable input in the long run? a. The size of a firm's plant

b. The acreage of an apple farmer's orchard. c. The production capacity of a machine. d. All of the above.