Let
$f(x) = \frac{5}{6-x}$
a. Find a power series representation for $f$.
(Note that the index variable of the summation is $n$, it starts at $n=0$, and any coefficient of the summation should be included within the sum itself.)
$\sum_{n=0}^{\infty}$
b. State the interval of convergence for the power series.
$x \in$