Of the following, the largest source of revenue for the federal government is

Other things constant, a rise in the number of unskilled immigrants tends to

A) reduce income inequality. B) increase income inequality. C) have no effect on income inequality. D) initially reduce income inequality, but then increase it because immigrants steal jobs from citizens.

In peak-load pricing, once capacity is reached, the firm's short-run marginal cost curve becomes ________.

A) downward sloping B) vertical C) negative D) horizontal