Simplify the following boolean expression (A+B) (A+B)

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

Reflect the point (7,0) across the y-axis

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?