Obtain the unit-step response and unit-ramp response of the following system using MATLAB.

\[ \begin{aligned} & \begin{array}{llllll} \dot{x}_{1} & -5 & -25 & -5 & x_{1} & 1 \end{array} \\ & \dot{x}_{2}=1 \quad 0 \quad 0 \quad x_{2}+0 u \\ & \begin{array}{llllll} \dot{x}_{3} & 0 & 1 & 0 & x_{3} & 0 \end{array} \\ & y=\left[\begin{array}{lll} & & x_{1} \\ 0 & 25 & 5 \end{array}\right] \quad \begin{array}{l} x_{2} \\ x_{3} \end{array}+[0] u \end{aligned} \]