To the nearest tenth of an inch, find the length of side c, the hypotenuse

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

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?