The purchasing power parity theory helps explain long-run trends in exchange rates, but not short-run fluctuations

Classical growth theory argues that when real GDP per person rises above the subsistence level

A) technological change slows down, stagnating the economy. B) population growth increases, driving real GDP per person back to subsistence level. C) people don't want to work as much, decreasing labor supply. D) the economy enjoys a period of permanent growth.

Which of the following is an example of price competition?

a. Nike signs LeBron James to a $90 million contract for endorsements. b. Kellogg's puts the images of Snap, Crackle, and Pop on boxes of Cocoa Krispies, linking the cereal with Rice Krispies. c. McDonald's introduces new garden McSalads. d. Tropicana introduces the Blue Raspberry Rush juice. e. Apple offers a 20% discount on its new range of iPhones.