okay so basically im stup1d as he11 and need help so pls help me it was easier to just screenshot it so please i really need to pass this class

What is the value of the expression below? 148+(-6)| + |– 35= 7|

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?

3x + 4y = 5 x- 3y = -7 solve by substitution