Given,
The expression is,
[tex]\frac{3x-9}{x+4}<0[/tex]
Required:
The critical value of the rational expression.
Taking the given expression as,
[tex]\begin{gathered} \frac{3x-9}{x+4}=0 \\ 3x-9=0 \\ 3x=9 \\ x=3 \\ x+4=0 \\ x=-4 \end{gathered}[/tex]
Hence, the critical values are x = 3 and x = -4.
