Which is equivalent to 3 square root 8 1/4

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.

Standard deviation of 19,29,21,22,23

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount