Read each relationship and decide whether its graph would be continuous or discrete

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.

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?