What is this I dont understand

Which ratio is equivalent to 10: 85

Can someone answer it, and plot it, for 20 points and brainliest answer? p. s. they're the same ! : )

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.