Answer:
Compound
Explanation:
There is more than one subject in the sentence.
It depends in what sort of " powerful " you mean. They could have power in being wealthy if they're a good singer/actor. But I doubt celebrities are powerful in anything else except for maybe fundraising and things that help other people out. Some celebrities could be powerful in getting high as well.
I have to turn my phone off and put it away I find it easier to right notes of what the teachers says to help pay attention