logistic growth mode $$P(t)=\frac{P_l}{1-ce^{-k*t}} $$
$P_l$,$c,k$ are constants P(t) population at time t $P_L$ is the carrying capacity
find constants with $P(0)=76.212$,$P(30)=122.775$,$P(60)=179.323$
$t=0$
$$P(0)=\frac{P_l}{1-c}=76.212 $$
$t=30$
$$P(30)= \frac{76.212 *(1-c) }{1-ce^{-k*30}}=122.775$$
$t=60$
$$P(60)= \frac{76.212 *(1-c) }{1-ce^{-k*60}}=179.323$$
can use newtons method and matlab if can see how put in form $f(x)$ and find the roots. Tryied to tell sage and wolframm alpha to solve for constants but having issues