The following graph shows how immigration (in thousands) to the United States has varied over the past century.

a. Find the average annual rate of change in immigration for the first half of the century (from 1905 to 1955).

b. Find the average annual rate of change in immigration for the second half of the century (from 1955 to 2005).

c. Find the average annual rate of change in immigration for the entire century (from 1905 to 2005).

d. Average your answers to parts a and b, and compare the result with your answer from part c. Will these always be equal for any two time periods?

e. If the annual average rate of change for the entire century continues, predict the number of immigrants in 2009. Compare your answer to the actual number of 1,130,818 immigrants.

Transcribed Image Text:

Immigration (thousands) 1100 900 700 500 300- 100 1026 238 1122 + + '05 15 25 35 45 55 65 75 85 '95 2005 Year