Write the equation of the line that passes through the points (1,5) and (9,1). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Asap! i'm not good math and i'm lost.

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?