When Erin simplified 6 - (-4) she got 2 as her answer. Is this correct? If not, what is the correct simplification?

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?

How do i put 3(x+7) in distributive property

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5