Use the functions below to answer the questions that follow. $$\begin{aligned} f(x)\amp=\frac{x^2}{x+12}\\ g(x)\amp=x^2 \end{aligned}$$

1. For the function $f\text{,}$ the domain is all real numbers except $x =$.
2. For the function $g\text{,}$ the range is all real numbers that are ? greater than zero less than zero greater than or equal to zero less than or equal to zero