The volume of a figure is 75 in3. If the dimensions are tripled what will be the volume of the new figure

Anyone know? will mark brainliest if correct

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?

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30