Dry rectangle that has an area of a square you need any permitter of 12 units what are the silence of the rectangle

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

Could somebody me with this radical simplification?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers