I'm from your college, but I'm a statistics major. If I minor in business, I don't have a double degree. I just have a secondary certificate. However, if you want to develop in finance, you can try to minor in accounting, finance and statistics. In order to help graduate students who are engaged in finance or take financial examinations in the future. But now the name of mathematics is changed to financial mathematics, because mathematics itself is more difficult. If you don't want to take math in the postgraduate entrance examination, I suggest you minor in it.