Question

During which time period did Vermont's urban population increase the most? 1940 to 1950, 1950 to 1960, 1970 to 1980, 1980 to 1990

Answer 1

For this case the first thing you should do is to see the values of the domain and range of the function where there was a major change.
We observe that for x = 1940 we have the value of y = 340.
For x = 1950 we have the value of y = 470.
The change was:
470 - 340 = 130
During this period there was the greatest growth of the population.
Answer:
Vermont's urban population increase the most in:
1940 to 1950