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

$2$
We know that for a polynomial function, $\lim\limits_{x \to a} k(x)=k(a)$, where $a$ is a constant. Thus, we have: $\lim\limits_{x \to -1} (8x^5-7x^3+8x^2+x-4)=8(-1)^5-7(-1)^3+8(-1)^2+(-1)-4 \\=-8+7+8-1-4 \\=-8+7+3 \\=2$