How many facts and figures should I know for the essay?

So the ACT essay is basically about taking a stance on something. But with some of the topics, I feel like I do not have enough factual evidence and that I’m veering on the side of just opinions in my practice.

Please advice.

You don’t need facts or figures. The essay is usually a generic topic that’s common knowledge. Write as much as possible, and make 3 arguments.

The essay prompt is changing. And other changes are coming to the ACT reporting http://www.act.org/actnext/