Which of the following problem types cannot be solved using the law of sines? **choose all that ! *** a. saa b. sss c. aaa d. sas e. asa **i'm confused : ( can you explain? you : )

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?