Which of the following must be included in the computation of a taxpayer's taxable income? Interest and dividend income Social security benefits Life insurance benefits received Child support payments received U.J. LUAJ JUNI DY ONS Bly we U Uwiry YUSLIUS. Experts describe the U.S. tax system as being a progressive system. This means that: a greater tax rate is applied to the last dollar of taxable income than on the first dollar of taxable income. only those taxpayers that earn income will incur income taxes. every taxpayer in the United States pays the same tax rate on their taxable income. A O a smaller tax rate is applied to the last dollar of earned income than on the first dollar of taxable income. Which of the following counting ranrosent the correct formula for computina ataynavor's tayable income? Check all that anni