Use the AnswerConnect Federal Tax database to answer the following questions:

a. Find the history of IRC § 1. Does this history explain what the highest amount of taxable income a single taxpayer could earn in 2011 before paying at a tax rate of 35 percent?

b. Find the tax topic that covers tax rates for individuals. What is the title of that topic?

c. Assuming your subscription has SmartCharts, what is the highest amount of taxable income a single taxpayer could earn in 2011 before paying a tax rate of 35%?

d. When would it be useful to know what the tax rates are in a prior year?