Population increased from 2mill in year 2000 to 3mill in 2002.Rate of increase of population directly proportional to number of people present,predict the population in 2004.

$\displaystyle N(t)=N(0)e^{kt}$ .. this is the general form i take it?

then N(2)=3 and N(0)=2

and now im lost as ever, i have the answer i just dont understand the method shown. thanks alot.