Don’t borrow trouble from the future. Do as well as you can in your pre-calc class, mastering the material, not just shooting for that A. Then, when you take the math placement test (usually during orientation week or online before you arrive), the school will assess how well you know the material. If you’re iffy, you may be put in a remedial math class for a semester, but if you do well in that you’ll be back on track. Seriously, don’t worry about college classes now. Just do well in the ones you’re in!