Sam paid $8.28 for 18 stamps at this rate how much would it cost to buy 12 stamps

Consider circle o, where and . m∠bpd °. °.

Find the distance between the point (-3,-4), and (see the picture below)

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]