If you’re taking college algebra or calculus, are you expected to remember everything you learned in high school, or are the professor(s) going to re-teach you?
@Jrgib98 depends on the professor and course, but usually you are expected to know or be familiar with at least most of the pre-requisite material.
Professors may spend a little time reviewing pre-requisite topics, but more often than not will start with the new topics.
You need to know the lower level math courses that are the prerequisites.