5(2x + 1) = 50
Help me plsss

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?

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

What is negative 3/9 times negative 2/8 ?