I did not do discussion#1. I also did not do any graded chapter quiz. I got 77 points for paper#1, 85 points for paper#2, 55 points for discussion#2, 45 points for extra credits, 110 points for exam#1

I did not do discussion#1. I also did not do any graded chapter quiz. I got 77 points for paper#1, 85 points for paper#2, 55 points for discussion#2, 45 points for extra credits, 110 points for exam#1, 115 points for exam#2, and 110 points for exam#3. How many points I need to earn in exam#4 to get a "C" in this class?