Math 122B requires enrollment of Math 122A in the same semester (or a previously recorded grade of C or better in 122A). Try adding Math 122A first before adding Math 122B.
Math 122A has precise prerequisites that must be met:
- Sufficient Math Placement score (Prep for Calculus 70-100%) OR
- Completion of Math 120R (Pre-Calculus) with a grade of C or better