Sheldon is four years older than his brother lee. togethet the boys are at most 26 years old. the inequality c+(c+4) is less or equal 26 can be used to determine the ages of boys. what does (c+4) represent? if lee is 5 years old how old is sheldon? if lee is 5years old what is the combine age of sheldon and lee? can lee be older than 11 years old?

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?