Determine the transfer function and poles of the system represented in state space as following using MATLAB.

\[\begin{aligned}& \dot{x}=\begin{array}{rrrr}9 & -5 & 2 & 2 \\-4 & 1 & 0 & x+5 \\3 & 5 & -7 & 7\end{array} u(t) \\& y=\left[\begin{array}{lll}1 & 7 & -2\end{array}\right] x ; \quad x(0)=\begin{array}{c}0 \\0\end{array}\end{aligned}\]