If the United States and Mexico trade Budweiser for Modelo beer, what type of trade does this represent?

Hank requires 1 hour to cut the grass and 3 hours to clean the house. His sister Holly requires 1 hour to cut the grass and 4 hours to clean the house. Which of the following statements is true?

A) Hank has a comparative advantage in both cutting the grass and cleaning the house. B) Hank and Holly both have a comparative advantage in cutting the grass. C) Hank has a lower opportunity cost of cutting the grass. D) Hank has an absolute advantage in both cutting the grass and cleaning the house. E) Holly has a comparative advantage in cutting the grass.

Marginal utility theory is used in the derivation of the

A) negative slope of demand curves. B) negative slope of supply curves. C) positive slope of demand curves. D) positive slope of supply curves.