Suppose p(t) represents the population of the United States (in millions) t years after the year 1900. The graph of the growth rate p' is shown in the figure.

a. Approximately when (in what year) was the U.S. population growing most slowly between 1900 to 1990? Estimate the growth rate in that year.

b. Approximately when (in what year) was the U.S. population growing most rapidly between 1900 and 1990? Estimate the growth rate in that year.

c. In what years, if any, was p decreasing?

d. In what years was the population growth rate increasing?

Transcribed Image Text:

p'(f) A 3 20 40 60 80 100 Years after 1900 Population growth rate (millions/year)