Solve the system of differential equations

$\left[\begin{array}{c}{x}^{\text{'}}(t)\end{array}\right]$

$y^{\text{'}}(t)=\left[\begin{array}{ccc}-5& 20& 5\end{array}\right]$

$0\left[\begin{array}{c}x(t)\end{array}\right]$

$y(t)$

$x(0)=-1,y(0)=-1$

$x(t)=$

$y(t)=$