Please help me:(.

Find the commission on a $590.00 sale if the commission is 15%.

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

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?