Help with this. Please

If you answer 2+2 you will get over 80 points

I’m confused on how to work the pie charts

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]