What is the measure of each interior angle of a regular polygon with 16 sides

Lorne subtracted 6x3 – 2x + 3 from –3x3 + 5x2 + 4x – 7. use the drop-down menus to identify the steps lorne used to find the difference.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite