I have a feeling i know what the answer is but i having a bit of trouble.

Which of the R values satisfy the following inequality?

r/3 + 5 ≤ 8

Choose all answers that apply:

A: R= 9

B: R= 12

C: R= 15

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?