Can you me find the area of a polygon

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

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64