For a class picnic, two teachers went to the same store to purchase drinks. One teacher purchases 18 juice boxes and 32 bottles of water, and spent $19.92. The other
teacher purchased 14 juice boxes and 26 bottles of water, and spent $15.76.
Write a system of equations to represent the costs of a juice box, j, and a bottle of water, w. please explain how to as well.

What is the binomial expansion of (2x-3)^5

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

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?