Please help me with this.

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?

If g^-1(x) is the inverse of g (x) which statement must be true

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1