9x3-4(16/7) is ?
i need asap pls

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

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?