What was the average rate of change, in millions of people per decade, in the US population from 1970 to 2000?
To find the average rate of change in the US population from 1970 to 2000, we first need to calculate the change in population over that time period.
In 1970, the US population was approximately 203 million people, and in 2000, the population was approximately 281 million people.
Change in population = Final population - Initial population
Change in population = 281 million - 203 million = 78 million
Next, we need to calculate the number of decades from 1970 to 2000, which is 30 years.
Average rate of change = (Change in population / Number of decades) in millions of people per decade
Average rate of change = 78 million / 3 decades = 26 million people per decade
Therefore, the average rate of change in the US population from 1970 to 2000 was 26 million people per decade.