Find the slope of the line through each pair of points

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?