## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

$5$
Recall the theorem $\lim\limits_{x \to c}k=k$ where $k$ is a constant. In this case, the constant $k$ is $5$ and the point $c$ is $1$. Thus, $\lim\limits_{x \to 1}5=5$