What is the answer for an inequality-5(x-1) -40

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.

Write the rational number in lowest terms 99/-15

What are the exclude value of mn+3m