Can some one me with this math problem

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

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.