Which of these best explains the next step to simplify this expression? 3y−45=35y−4 A. Add 5 to –4.
B. Multiply 5 by –4.
C. Make the –4 exponent in the denominator positive.
D. Keep the exponent in the denominator –4.

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