The grades of two students during their last semester at S.U. are shown in Table 2.Courses...

The grades of two students during their last semester at S.U. are shown in Table 2.

Courses 1 and 2 are four-credit courses, and courses 3 and 4 are three-credit courses. Let GPA, be the semester grade point average for student i. Use matrix multiplication to express the vector  in terms of the information given in the problem.

TABLE 2