#### Answer

the details below verify the answers in item $86$

#### Work Step by Step

Using a graphing calculator, the graph of the function, $
f(x)=\sqrt{x}-2
,$ is shown below.
The domain of a function and its graph is the set of $x$-values that the graph uses. Based on the graph below, the domain is the interval $
[0,\infty)
.$
The graph below and the domain above verify the answers in item $
86.$