Jenny is planning a trip to Europe. She finds that I US dollar is equal to about 0.67 European euros. Which equation can be used to convert from US dollars (d) to euros (u)? O A. d = 0.67 B. d = 1 + 0.67 C. 11= 0.67d D. u= d +0.67​

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?