How to solve this problem
. 0.3 [1.57 – (0.6)²]

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Two lines parallel to the same plane are parallel to eachother

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.