Hi, I need help please???
Really appreciate it.

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

A(t)=728(1+0.04)^t how much money did aditya originally invest

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?