how do I study for Math 115, Math 116, Che 102 finals

115 final is on the 5th, 116 on 8th and 102 on 10th. Any advice and suggestions on how to study well for finals. how hard is it to get 70+ in either of these courses. I'm scared especially for 115 because Im unable to memorize all those theorems and its overwhelming and still have end of the section problem sets.. and didnt even do problem sets for 116 at all and same for 102. I still have a research paper and solidworks assignment due on tuesday. How do I make use of the time and study well for finals, any advice and suggestions would be appreciated.