The number of subsets that can be created from the set {1,2,3}

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.

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

What’s the range cuz i can’t find it?