Angela's Gross Income (per month) = $2800
Her tax rate is 18%.
Let's find 18% of 2800:
[tex]\begin{gathered} \frac{18}{100}\times2800 \\ =0.18\times2800 \\ =504 \end{gathered}[/tex]Angela pays $504 in taxes.
Thus, she will have left:
2800 - 504 = $2296