Answer
$\text{Domain: all real numbers}
\\\text{Range: }
\{20\}$
Work Step by Step
$\bf{\text{Solution Outline:}}$
To find the domain and range of the given function, $
g(x)=20
,$ use the concepts of the constant function.
$\bf{\text{Solution Details:}}$
The constant function, $
g(x)=20
,$ is a horizontal line that passes through $(0,20).$ Hence, it has the following characteristics:
\begin{array}{l}\require{cancel}
\text{Domain: all real numbers}
\\\text{Range: }
\{20\}
.\end{array}
