Math is at the heart of most sciences--or the heart of everything, depending on who you talk to. When you love math, you see the beauty in numbers. Studying mathematics and pursuing jobs that rely on it will allow you to explore those intricacies for the rest of your days in many varied fields.
The career options with a business/management major are certainly varied, almost limitless. Whether you want to explore your entrepreneurial side and start your own business, or just be a part of one, this is the right major for you.