Write an equation to solve and find the answer to the following rate problem. show all of your work. a gardening store sells 6 plants per hour. how many plants will they sell in 5 hours?

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.