Most Bachelor degrees that are related to photography (or Studio Art) do not allow elective business coursework so you would have to take those on the side and they wouldn't apply towards the hours required for graduation. I really can't see getting a business degree to go into photography unless you are to start at executive level for a photography company.
I believe a degree in just photography is not enough. Although the specific training is very helpful I would go for a more broader degree such as Bachelors in Studio Art, Art History, etc (that include photography course work). These allow you to broaden your job opportunities if you don't start your own photography studio.
The photography field is saturated at the lower levels but with a degree you will have opportunities to start at higher levels in related fields such as advertising, graphic design, editing, video, etc.
If you have the opportunity to get a degree, get it and don't look back.