In 2010, high-income families (the top 20 percent) in the United States earned approximately ____ percent of the total before-tax income

Suppose the price of home heating oil is unchanged, yet we observe people purchasing 20% more than a year ago. Then

A) the demand for home heating oil has increased. B) the demand for home heating oil has decreased. C) the demand for home heating oil has remained unchanged—only quantity demanded changed. D) the law of demand has been proven false.

The link between incentives and economic growth suggests a certain trade-off between equity and efficiency

Indicate whether the statement is true or false