1. The problem statement, all variables and given/known data The bacteria in a tuna sandiwch left out of refrigerator grows exponentially. The number of bacteria in a sandwich at any time, t, in minutes can be modelled by the function N(t)= No[3^(t/35)] a)if there are 600 bacteria initially, how long will it take for the bacteria population to grow to 1800 b) at what rate is the bacteria population growing after 15 minutes 2. Relevant equations N(t)= No[3^(t/35)] 3. The attempt at a solution a)I figured out part a, t=35 1800=600[3^(t/35)] ln3=(t/35)ln3 t=35 minutes b) N(t)= N(t)= No[3^(t/35)] N'(t)=(t/35)(600)(3) I'm not sure where to go from there..