Emily used two third cups of milk to make one batch of muffins how many cups of milk would emily used if she makes three batches of muffins

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]