A bacteria culture initially contains 2000 bacteria and doubles every half hour. Find the size of the bacterial population after 80 minutes.

Find the size of the bacterial population after 10 hours.

Find the value of x for which the lines are parallel.

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?

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm