Brinley deposited $237 into the bank. What will the interest earned be if Brinley left the money there for 5 years with an interest rate of 7.69%? (round to the cent place)

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?