According to the rule of 70, a nation that has an economic growth rate of 5 percent will double its output in ______ years.

Which of the following is true of the wage gap between the top 10% of earners and the bottom 10% of earners in the U.S. economy?

A) The wage gap has increased over time. B) The wage gap has decreased over time. C) The wage gap has remained the same over time. D) There is hardly any wage gap between the top 10% of earners and the bottom 10% of earners in the U.S. economy.

The market for gasoline in May is in equilibrium, at a market clearing price of $4.50 per gallon. After Memorial Day, the demand curve for gasoline increases, which causes

A) the demand curve for gasoline to shift to the right, creating a shortage at $4.50 per gallon which causes the market clearing price of gasoline to rise. B) the demand curve for gasoline to shift to the right, creating a shortage at $4.50 per gallon which causes the market clearing price of gasoline to fall. C) the demand curve for gasoline to shift to the left, creating a shortage at $4.50 per gallon which causes the market clearing price of gasoline to rise. D) the demand curve for gasoline to shift to the left, creating a shortage at $4.50 per gallon which causes the market clearing price of gasoline to fall.