300-7 [4 (3+5)]+3 to the 3rd power

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?

Find the slope intercept form of (-3,6) and (3,-6)

What integer is equivalent to 9 3/2