good luck.  I would never have taken on so many activities at the same time.  Not saying you did wrong, just saying I know I am incapable of doing so many things.  For me, its tough enough to have school, hobbies, a girlfriend, and part time work.  Marrage, moving, honeymoon, I would place as an impossibility if I wanted to try to be successful in everything I did.  
Try talking to the professor.  S/He may allow you to retake certain aspects of the course and rearrange your grade a bit.  Math skills are easy to tune.  You just practice practice practice.  Do not rely on people doing examples for you.  If there is a concept you do not grasp, just get someone to show you one example, then after 6hrs, try to redo the example on your own without the tutor with you.  Practice Practice Practice, and good luck!
BTW, i have never failed any course in my life.  Part of the reason is that I did not receive much financial aid and have been paying my way ~28k$ per year of my own money to fund my education (I dont believe in loans).  Seeing the many possible BMW 328i get passed over for the sake of my funding education kind of forced me to ensure I did well in my coursework. The second I felt the course slip away, I immediately got help and did many additional practice problems.