## Calculus 10th Edition

Domain: $(-\infty,\infty)$ Range: $(-\infty,4]$
$h(x)=4-x^{2}$ This function is defined for all real numbers, so its domain is $(-\infty,\infty)$ This function represents a parabola of vertex $(0,4)$ and it opens downwards, so its range is formed by all the numbers smaller than $4$, including it, or $(-\infty,4]$