Suzy has $4,073 to invest into simple interest account. She's hoping to gain $1,401 interest after 9 years. what annual percentage rate dose she need to find to make sure she earns this much interest​

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?