Problem 2 (1 point) a) Suppose that a student who completed 15 credit hours during his first semester of col- lege received one A, one B, one C, and one D. Suppose that a value of 4 is used for an A, 3 for a B, 2 for a C, 1 for a D, and 0 for an F. Calculate the student's semester GPA. b) Calculate GPA using of credit hours. However, each course is not worth the same number of credit hours.' Table 2.7 Semester Academic Record COURSE GRADE CREDIT HOURS, w VALUE, X English 3 Math Biology lab Spanish D 5 Total 15 c) Which one is better indicator? 4 B 3 3 4 2 1