Answer
$$ \text{Domain:} \ [0,4] \\ \text{Range:} \ [0,2]$$
Work Step by Step
The domain of the function is all values of x possible for the function while the range of the function is all possible values of y for the function. Thus, we find:
$$ \text{Domain:} \ [0,4] \\ \text{Range:} \ [0,2]$$