Can someone help me with this please?

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?