Will give brainiest please help!!

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

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.

In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units