1) Removable discontinuity at $x=8$; vertical asymptote at $x=7$.
2) $\lim\limits _{ x\rightarrow 0 }{ f\left( x \right) } =\frac { 2 }{ 9 }$ ; vertical asymptote at $x= -9/4$
3) Hole at $(-4, 2)$
4) Vertical asymptote at $x= 2$; hole at $(6,3)$
Could you please provide a solution to each condition?
Thanks very much