A country's population in 1992 was 72 million. In 1998 it was 76 million. Estimate the population in 2012 using the exponential growth formula. Round your answer to the nearest million.
First find the rate of growth (k) P=Ae^kt P 76 million A 72 million E constant K ? T time 1998-1992=6 years Solve the formula for k K=[log (P/A)÷log (e)]÷t K=(log(76÷72)÷log(e))÷6 k=0.009
Now find the population in 2012 P=Ae^kt P ? A 72 million E constant K 0.009 T time 2,012−1,992=20 years
