Answer:
C
Step-by-step explanation:
The line is describing this: (4, infinity) which means that you CAN'T pick 4 but any number higher than that works even 4.01 for example. Through trial and error, you see that C works because at x=4 you get -15>-15 doesn't work but if you had 4.01 for example, it would. And you can check the logic of the rest of these by trying that point and seeing what it would look like. By the way, open dot means that the domain STARTS there but only that. That number isn't a solution, while a closed dot would mean that the number 4 WOULD be a solution.
