Can someone help me with this

Which expressions are equivalent to -6 + 3m

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.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box