Answer:
All values of x greater than 0.
Step-by-step explanation:
Let x represent width of rectangle.
We have been given that the length of rectangle is 4 units greater than its width. So the length of rectangle would be .
The domain of a function is all real values of independent variable that the function can take on.
Since our given function represents the area of rectangle, where x represents width of rectangle, so the value of x should be a non zero and non-negative number.
Therefore, the domain of our given function would be