SOMEONE PLS HALP MEH I REPEAT I NEED HELP HELP (7th grade math)
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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.

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?

5cakes cost 3.50 how much do 7 cakes cost