1. An elevator in a tall building starts at a floor of the building that is 80 meters above the ground. The elevator descends 2 meters every 0.5 seconds for 4 seconds. Identify the domain and range using the following formats

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?