The number of gallons of gasoline used varies directly with the number of miles driven. If 45 gallons of gasoline have been used after driving 625 miles, how
many gallons would be used after driving 900 miles? *

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.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?