Which BEST explains why the number of states in the world increased significantly between 1985 and 1995?

Alife insurance salesman sells on the average 3 life insurance policies per week. use poisson's law to calculate the probability that in a given week he will sell 2 or more policies but less than 5 policies? i just require an answer.

What is the term eccentricity a measure of?

Assume you wanted to save 2000 to buy a used car 18 months from now. how much money do you need to save every week to accomplish your goal?