Can anyone help me? ill give brainiest if its correct! Which value is MEAN of the data set?

A) 480
B) 485
C) 500
D) The MEAN cannot be determined from the available information.

Someone . me. compound probability

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?

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.