Which would the phrase five times the sum of a number and 6 look like as a variable expression

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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