a) 50.21 years 14) The number of bacteria, N (t), in an experiment t hours after it begins is given by 14) N(t ) = - 3000 1+ 74e-0.035t . When will there be 2500 bacteria? a t=118.15 hours b) t= 16.896 hours C) t = 168.96 hours d) t= 54.530 hours