If the exchange rate between the Russian ruble and the U.S. dollar is 33.3 rubles for $1, then how much is each ruble worth in U.S. dollars?

Suppose that when the price of hamburgers decreases, the Landry family decreases their purchases of chicken nuggets. To the Landry family

A) hamburgers and chicken nuggets are normal goods. B) hamburgers and chicken nuggets are inferior goods. C) hamburgers and chicken nuggets are substitutes. D) hamburgers and chicken nuggets are complements.

A patent on a product gives a firm

A) protection from having the invention copied or stolen for a period of 20 years. B) economies of scale in producing the product. C) excessive profits in the long run. D) the power to impose a tariff on a competing product.