If the price of gasoline was $3.25 a gallon and it is now $3.75 a gallon, what is the percentage change in price?

Suppose the world price of coffee is $2 per pound and Brazil's domestic price of coffee without trade is $3 per pound. If Brazil allows free trade, will Brazil be an importer or an exporter of coffee?

Refer to the table below. If the profit for each unit of paper product is $2 and the profit for each unit of lumber is $5, what is Big Oaks' marginal cost of producing between points B and C on their production possibilities frontier?

Big Oaks can produce either paper products or lumber with each tree that they harvest. Because Big Oaks can adjust the amount of paper products and lumber they produce from the harvested trees, paper products and lumber are produced in variable proportions. The above table summarizes Big Oaks production possibilities from each harvested tree.

A) $1.25
B) $6.25
C) $5.50
D) $2.50