Suppose the population of a country in 1985 was 145 million. In 1995 it was 190 million. Use the formula P = Ae kt to setup an expression to estimate the population of the country in 2005.

Question

anonymous · Answer

$$145=Ae ^{1985k} $$
$$190=Ae ^{1995k}$$
Those are the two equations for 1985 and 1995.
If you want 2005, plug in for A and t.
A=original amount
t=time

radar · Answer

You are to solve for k from the 1985-95 data.  After k is solved, then you can determine the population in 2005.

radar · Answer

$$190 = 145e ^{10k}$$ This is how the formula looks,  now solve for k.  With k value known, you then can plug in you values and solve for the 2005 population.