Defining Limits and Using Limit Notation Practice Test

For $u(x)=\frac{\sin(x)}{x}$ for $x\ne0$ and $u(0)=3$, which limit expression describes $u(x)$ as $x\to0$?

For $h(x)=\frac{x^2-9}{x-3}$ when $x\ne3$ and $h(3)=10$, which limit expression describes $h(x)$ as $x\to3$?