Can someone solve this for me?

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

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?