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

$-10$
Use the limit property for a monomial: $\lim\limits_{x \to c} f(x)= f(c)$, where $c$ is a constant. $\lim\limits_{x \to -2} (5x)=(5) \lim\limits_{x \to -2} x \\=(5)(-2) \\=-10$