According to the benefits principle, it is fair for people to pay taxes based on their ability to shoulder the tax burden

Comparison of the European and U.S. labor markets suggests that

A) it is relatively cheap to hire workers in the United States. B) the U.S. labor market is more "flexible" than the European labor market. C) job security and income equality are greater in the European labor market. D) A and B. E) all of the above.

According to the Romer model, tax incentives to support research and development will lead to ________

A) higher tax rates in the future B) an increase in the general level of prices C) a decrease in the general level of prices D) increased per capita income