$\displaystyle f(x) = \frac{ x + 6}{(x + 9)^2}$.

If there is more than one answer, enter all such values for each in a comma separated list. If are no solutions, enter NONE. Do not leave a blank empty.

(a) The function has zero(s) at $x =$ help (numbers)

(b) The function has vertical asymptote(s) at $x =$ help (numbers)

(c) The function's long-run behavior is that $y \to$ as $x \to \pm \infty$ help (numbers)

(d) On a piece of paper, sketch a graph of this function without using your calculator.