The owners of a minor league hockey team have found that when they charge $12 for a lower-level seats they average 800 fans per game. for every $1 increase in ticket price, the attendance decreases by an average of 50 people. find the ticket price that will maximize revenue for the team's owners.

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.