Use the table of tax rates below to answer questions 3 through 7. Income range Tax rate $15,000 and below 5% $15,001-$30,000 8% $30,001-$60,000 12% $60,001-$120,000 20% What is the marginal tax rate (rounded to the nearest tenth of a percentage point) for someone whose income increases from $50,000 to $80,000