mputing and interpreting average tax rates In a hypothetical econamy, Tim earns $14,000, Alyssa earns $28,000, and Brian earns $42,000 in annual income. The following table shows the annual taxable income and tax liability for these three single individuals. For example, Tim, who earns $14,000, owes $1,540 in taxes. Use the tax liability figures provided to complete the following table by computing the average tax rate for Tim, Alyssa, and Brian with an annual Taz Liability income of $14,000, $28,000, and $42,000, respectively.(Hint: Use the following formula to calculate the tax rate: Tax Rate Tazabic Tncome " Multiply the tax rate you derive by 100 to get this into percentage form.) Taxable Income Tax Liability Average Tax Rate Taxable Income (Dollars) (Dollars) (Percent) Tim 14,000 1,540 ] Alyssa 28,000 3,080 \\:I Brian 42,000 4,620 ] The income tax system for this country is v . proportional regressive progressive