Final answer:
The estimated increase in the US population from 1900 to 1950 is 75 million, found by subtracting the population in 1900 from the population in 1950 and then rounding to the nearest million.
Step-by-step explanation:
The question asks us to estimate the increase in the US population between 1900 and 1950 to the nearest million. We can find this increase by subtracting the population of the US in 1900 from the population in 1950.
The US population in 1900: 76,212,168
The US population in 1950: 151,325,798
To estimate the increase, we do a simple subtraction:
151,325,798 - 76,212,168 = 75,113,630
Rounded to the nearest million, the increase in population is 75 million.