If "an apple a day keeps the doctor away" and you are only interested in keeping the doctor away—which you value at 100 utils—what is the total utility you derive consuming 2 apples and what is the marginal utility of the second apple?

Which of the following is not a criticism of flexible exchange rates?

a. All of the following. b. They are volatile, which increases risks for importers and exporters. c. They could affect employment and increase demand for trade restrictions. d. They do not allow for discretionary monetary policy. e. They allow central banks to follow expansionary monetary policies.

In monopolistic competition there is/are

A) many sellers who each face a downward-sloping demand curve. B) a few sellers who each face a downward-sloping demand curve. C) only one seller who faces a downward-sloping demand curve. D) many sellers who each face a perfectly elastic demand curve.