The 2010 census reported about 308.7 million people in the United States. The 2000 census reported a population of about 281.4 million. By about what percent did the population change? Did the population grow or shrink? Hint: To find the answer,find the difference of the populations.

The population in the South in 2000 was 100,236,820. In 2010, the population in the South had increased by 14.3% from 2000. About many people lived in the South in 2010?

These questions are from my algebra homework, how do I show my work for these