How can i decide if these sequence converge, then go on to state its limit?

$\displaystyle a_n = \frac {9 + 8(0.6)^n}{6(0.3)^n - 6}$ $\displaystyle (n=1,2,3,...)$

Thanks guys

do i start like this:

$\displaystyle a_n = \frac {9 + (4.8)^n}{(1.8)^n - 6}$