Why can't we find the area of this parallelogram​

Look at attachment. has all info needed. need

What are “like terms”? why can we only add like terms?

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?