Plsss answer the question I have uploaded as a photo .To be called the brainiest

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Wrote and expression for the difference of p and 4