Stay on top of the homework and listen to his in class lectures and you’ll be fine. I’m terrible at math but Mr. Metzger has the most understandable way of teaching math ever and he knows what he’s talking about unlike majority of copy paste clueless math teachers who get snarky with you but can’t even answer your questions themselves. He’s to the point with everything and communicates deadlines well. Only downside is that HW load can be aggravating but it’s not excruciating.