A population P\displaystyle {P} obeys the logistic model. It satisfies the equation
dPdt=0.11P(1P7400)\displaystyle {\frac{{{d}{P}}}{{{\left.{d}{t}\right.}}}}={0.11}{P}{\left({1}-\frac{{P}}{{7400}}\right)} for P>0.\displaystyle {P}>{0}.

(a) The population is increasing when <P<\displaystyle <{P}<

(b) The population is decreasing when P>\displaystyle {P}>