Not that many careers for BS math majors.
My daughter could have just gone into govt relations with a bachelors and done fine. However, the extra three years with the joint degree will put her well above where she would be earning capacity wise. The point is you need a plan and to work at your studies, not just party in a drunken stupor, taking cake courses for 4 years. If you do, normally you will be fine. Also, despite our current system of higher ed, some may actually come out educated.