Roger and Clarissa each sold boxes of cookies for a fundraiser. They sold large and small boxes for different prices. Roger sold 12 large boxes and 8 small boxes for a total of $56.00. Clarissa sold 16 large boxes and 11 small boxes for a total of $75.50. Use a system of two
equations and matrices to find the price of a large box and a small box

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?