Mr. buckham teaches vocabulary to 27 fourth grade students. there are 63 new vocabulary words. each student rights one vocabulary and definition on an index card. does he have enough index cards for all students ?

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.