The center of a circle is (1,6) The circle passes through the point (-1,8). What is its radius?

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?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false