Answer
Domain: $x\geq 5$
Range: $y\leq 0$
Work Step by Step
The graph of the function begins at $x= 5$ and continues for positive values of $x$ only, therefore $x\geq 5$.
The function's values start from zero and take on negative values for higher values of $x$, so $y\leq 0$.
Hence, the domain and range of the function are give by: \begin{equation}
\begin{aligned}
\textbf{Domain :}\quad & x\geq 5\\
\textbf{Range :}\quad & y\leq 0\\\\
\end{aligned}
\end{equation}
