please answer question 18 &19 and please show work, thank you! :)

320 federal tax bracket, their total effeck tax rate is [A]. Round the answer to 2 dacimal places. Incfande a % sign after the final tigit in your answer - otherwise it will not match eaaly. QUESTION 19 Use the following tax brackets for taxable income: Compute the averaoe tax rate and maroinal tax rate for the following taxable income amsunts: ADD \%o sions after each of your answers, FOR yoer AVERCACE values, ROUND to TwO Decimal siaces. Write 8 's for the decimal plsces in your answers aven if there are no decinsal figures. For the marginal rate, there are no decimals A. taxable incoche of $45,000 : Average {2 decimals ) B. taxable income of $150,000: Average (2 decimas) Margina \{no decimals, une - wigh dign) C. taxable income of $250,000z Average (2 decimals)