Find a particular solution to these two nonhomogeneous equations: (a) y' = [1 2 2 1] y + [1 t] (b) y' = [1/t - 1 - e^-t/t - 1 e^t/t + 1 1/t + 1] y + [t^2 - 1 t^2 - 1]; y = [t e^-t e^t t]

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?