The portion of a line that starts at one point and goes off in a particular direction to infinity

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

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?