Help is part a correct, and what is the answer for the sentence part b? I will give you the brainiest answer Answer correctly don't be an imposter

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

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

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?