\begin{tabular}{l} $,000 \\ $0 \\ \hline$4,000 \\ $20,000 \end{tabular} Question 17 Net investment income tax rate is 3.8% of the greater of 1) net investment income or 2) AGI in excess of a threshold amount. True False Question 18 Every taxpayer has to pay additional medicare tax in the amount of .9 percent