## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$$lim(x\rightarrow \infty)=\infty$$ $$lim(x\rightarrow -\infty)=-\infty$$
We look at the term of the highest degree for the polynomial. Doing this, we see that this is a cubic function with a positive coefficient. Thus: $$lim(x\rightarrow \infty)=\infty$$ $$lim(x\rightarrow -\infty)=-\infty$$