Fundamental of finance

For me , this is a very difficult subject. Tml going to exam ad but till now i stil ldont know how to use all of the formula. There is too many formula and still got teory have to memorize. It is so difficult. May GOD will five me his luck. Just hope that those topic that i had study will appear in the exam papper and those which i didn't study will not come out. ”阿佛“。