A line is perpendicular to x + 3y – 4 = 0 and has the same x-intercept as 2x + 5y – 20 = 0. Find an equation for the line.

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?