Math 240

Hello, pharmacology major and cs minor student here and I am really struggling with the class and got 34 percent for the midterm. I am reviewing all the concepts from the beginning, memorizing the theorems and doing problems, however I'm scared to death. The final is coming up soon and I wanted to know aprox how much I would need to pass and if D is a pass in this case since it's a complementary class for the minor. Also I would love some suggestions on how I can do better for the final.