Your cable bill thus month was exactly $150. the regular fee for cable is $97, but this month you rented 2 movies that each cost the same amount to rent. identify the independent and dependent quantities me, need an answer, it's for 23 points

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?