How do you find he decimal in a mixed number ? ?

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.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Math question.. plz me .. best answer all