Please help

What is the vertex form of f(x) = x2 + 6x + 3

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180