Social Science: Immigration The percentage of people in the United States who are immi...

Social Science: Immigration The percentage of people in the United States who are immigrants (that is, were born elsewhere) for different decades is shown below.

These percentages are approximated by the function , where x stands for the number of decades since 1930 (so that, for example, x = 5 would stand for 1980).

a. Find using the definition of the derivative.

b. Evaluate the derivative at x = 1 and interpret the result.

c. Find the rate of change of the immigrant percentage in the year 2010.