What category does the number negative 4 fall into 

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

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?