Solve the linear inequality $5 - 3x \leq - 16$. Express the solution using interval notation and graph the solution set.
$
\begin{equation}
\begin{aligned}
& 5 - 3x \leq - 16
&& \text{Given}
\\
\\
& 5 + 16 \leq 3x
&& \text{Add $3x$ and $16$ to both sides of the inequality}
\\
\\
& \frac{21}{3} \leq x
&& \text{Divide by } 3
\\
\\
& 7 \leq x
&& \text{Simplify}
\end{aligned}
\end{equation}
$
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