Derivative of xsinx by using first principle

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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?