Question

Hello! I need some assistance with this homework question posted below

Answer 1

Given:

$f(x)=\frac{4x^2}{9x^2+7}$

By taking the denominator

$\begin{gathered} 9x^2+7=0 \\ x^2=-\frac{7}{9} \\ x=\pm\frac{\sqrt[]{7}}{3}i \end{gathered}$

Domain:

$(-\infty,\infty)$