In order to fund industrywide advertising, managers of trade associations often try to charge the members that receive a lower marginal benefit from advertising ________.

During the past twenty years, the prices of prescription drugs, relative to the prices of other goods, have risen, yet Americans buy more prescription drugs than ever. This might be because

A) with higher incomes and more older Americans, we have moved rightward along our demand curve for drugs. B) with higher incomes and more older Americans, the demand curve for prescription drugs has shifted rightward. C) more new firms entered the pharmaceutical industry each year, which caused a rightward shift in the supply curve of prescription drugs. D) Both answers A and C are correct.

What helps to explain the remarkable 7.3% growth rate in South Korea between 1960 and 2011?

A) The education of South Korean women B) A radical reduction in foreign imports and a maximization of South Korean exports C) Huge foreign aid from the World Bank D) All of the above. E) None of the above.