Ineed with this and choose the right answer

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?

Corresponding angles are a. always b. sometimes c. never congruent

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.