#### Answer

(a) Refer to the image below for the graph.
(b)
Domain: $(-\infty, +\infty)$
Range: $(-\infty, 2]$

#### Work Step by Step

(a) Use a graphing calculator to graph the given function.
Refer to the image below for the graph.
(b)
The domain is the set that contains all the x-values covered by the graph/equation.
The range is the set that contains all the y-values covered by the graph/equation.
The graph covers all the real numbers so the domain is $(-\infty, +\infty)$.
The graph covers the y-values from $2$ and below.
Thus, the range is $(-\infty, 2]$.