you dont need economics or business to do finance just maths so you don't need to change schools but if you love those subjects and are good at them you may want to for ur uai sake
1. it is in the syllabus - the last dot point says to use all your knowledge of the things you have learnt to assess impact on lives of adherents and the religious tradition2. you did not have to explicitly explain teh quote or the people it referenced in it aka Mohammad you just had to use it...