Jamie has just completed her second semester in college. She earned a grade of C in her 4-hour linear algebra course, a grade of C in her 5-hour psychology course, a grade of A in her 4-hour physics course, and a grade of F in her 5-hour speech writing course. Assuming A=4, B=3, C=2, D=1, and F=0 deternine Jamie's grade point average for the semester.