Triangle STU is rotated 270° counterclockwise about the origin to create triangle S’T’U’. If point U of triangle STU is (a, b), which algebraic representation best describes point U’ of triangle S’T’U’? (a – 270, b – 270)

(a , –b)

(b, a)

(b, – a)

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