6. (5 points) A student earned grades of a B in a 2-credit course, an A in a 5-credit course, and a C in a 1-credit course. The grading system assigns quality points to letter grades as follows: A =4 B-3 C=2 D =1 F=0 Compute the grade point average (GPA) of the student (recall that GPA is a weighted mean). Show your work