exponential functions test and answer key
es every 3 hours. If initially there are 500 bacteria, write an exponential model for the population after t hours, and find the population after 9 hours. Answer: Doubling time T_d = 3 hours. The growth model: P(t) = P_0 2^{t / T_d} where P_0 = 500. Substitute: P(t) = 500 2^{t / 3} To find P