The table gives the population of the United States, in millions, for the years

Question

The table gives the population of the United States, in millions, for the years 1900 - 2000.

(a) Use the exponential model and the census figures for 1900 and 1910 to predict the population in 2000.
million (CORRECT)
What was the actual population in 2000?
million (CORRECT)

(b) Use the exponential model and the census figures for 1980 and 1990 to predict the population in 2000.
million (CORRECT)
Use this model to predict the population in the year 2010.

???? million

Use this model to predict the population in the year 2020.

???? million

Explanation / Answer

P = a*e^(bt) ... P = 250, a = 227, t = 10, , , solve for b .... then set t=30 (for 2010) and solve for P .... for the last part set t = 40 (for 2020) and solve for P.

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