"If I take A-levels in Maths, Chemistry, and Business, what career options do I have?
you could go on to university and do most science degrees (most only require chem and another science which would be maths in your case), most medicine courses, economics excluding the very top unis who require further maths, business related courses, law (no subject specific requirements, some unis prefer at least one essay subject but i think business could fit that criteria?) and there’s probably much more. that subject combination gives you a lot of choice!