Replying to Failing a class/ Can't go to summer school

So basically im in 11th grade and I'm failing my math class. Its a college level class so Its not like I'm failing algebra 1 but it still sucks. In the beginning of the quarter I had the stomach flu and a broken arm which made me miss two weeks of school. Those were the fundamentals for the unit and when ever I tried to make it up I could not understand it. So now here's the tricky thing im gonna be at mt. hood for probably 2 months. If anyone could give me any tips or ideas on what to do because I can't go to summer school. Last semester I had a B but this semester i just need to pass..I have a 44% in the class cus the teacher made me take the two tests I missed right away and I got a 40% on one and a 15% on the other.......tests are 80% of our grade. If anyone has any good study habits,tips, or insults lay them on me. Thanks!