Solve a-b a) (Population Growth Model) In an experiment with the protozoan Paramecium, the biologist G. F. Gause modeled the size of the protozoan population by the following logistic model: N(t) = 61/ (1+31exp(-0.7944t)) , where t is time in days. According to this model, how fast was the population growing after 8 days? b) Prove that 2x2 + x-6 if x *-2 x+2 f(x) = ] -7 , if x =-2 is continuous at x=-2