Equation is: at^2 + bt + c = P
t = time
P = population
t = 1, P = 3.03.
t = 2, P = 1.72.
t = 3, P = 1.17.
a + b + c = 3.03
( 2^2 = 4) = 4a + 2b + c = 1.72
(3^2=9) = 9a + 3b = c = 1.17
a = 0.38, b = -2.45, c = 5.1.
quadratic equation is: P = 0.38t^2 - 2.45t + 5.1
