Answer:
C. -4 ≤ x ≤ 9
Explanation:
The domain is the x, meaning how far the graph goes to the left and right.
We see on the left, the x gets to -4 and stops; on the right, the graph gets to about 9 and stops.
So, the domain of the graphed function is -4 ≤ x ≤ 9