How many different types of algebra are there?

Brian: How many different types of algebra are there?
I know there is pre algebra, but what is there after that? And what kind of questions do you solve with pre algebra? And is 5x^2+24x a pre algebra question?

Answers and Views:

Answer by *******
The order is Pre-Algebra Algebra 1 and Algebra 2. For 5x^2 + 24x, this could be a pre-algebra question or an Algebra 1 question.

Answer by Andrew
Don’t forget linear algebra my favorite class =D