Dear Cooki,
I too have taken business administration, and i'm very happy with my choice. Though I have studied it in bth my BBA and O & A level, so maybe i find the syllabi easy but then i hate calculations myself and hate and avoid any sort of math but the decision maker for me to actually opt this subject was that after my observation of last 5 year past papers, i found the calculation involved in the quest. to be simple. so i hope to encourage you that instead of worrying focus on the topic; definitions and formulas and you be good! also you can opt the other non calculative ques frm the fm sec in the paper if you are not confident to attempt the calculations one! =). I believe that like the rest of type of examinations mentioning the formula, correct steps of working wud attain marks if nt full even if the final ans is wrong! Good Luck! =)