## Calculus 10th Edition

Domain: $(-\infty,\infty)$ Range: $(-\infty,0]$
The domain of an absolute value function is all real numbers or $(-\infty,\infty)$ The function $f(x)=|x|$ has a range of $[0,\infty)$ So the range of $f(x)=-|x+1|$ is $(-\infty,0]$