#### Answer

(a) Refer to the image below for the graph.
(b)
Domain: $[1, +\infty)$
Range: $[0, +\infty)$

#### 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 the x-values from $1$ and above so the domain is $[1, +\infty)$.
The graph covers the y-values from $0$ and above.
Thus, the range is $[0, +\infty)$.