Can I drop a class this spring?

I got accepted to CSUN a couple months ago and am planning to attend to get my degree in Business Law. I have a 3.4 GPA and I am taking Accounting 2 and Calculus this semester. Would my acceptance get rejected if I drop calculus? I have a terrible teacher. The class was full at the beginning of the semester and now its down to about 7 students. I have 2 other transferrable math courses so my CSU GE is still complete.