A population $P$ obeys the logistic model. It satisfies the equation
$\displaystyle \frac{dP}{dt} = \frac{2}{900} P (9 - P)$ for $P > 0.$

(a) The population is increasing when $< P <$

(b) The population is decreasing when $P >$

(c) Assume that $P(0) = 2.$ Find $P(80).$
$P(80)=$