The graph P= f(t) to the right gives the population of a bacteria colony after t hours. Graphically estimate the following quanti- ties, and include the appropriate units with your answers. (a) The population of the colony at t = 1 hour. (b) The average growth rate of the colony between 1 and 3 hours. (c) The growth rate of the colony at t = 1 hour. P 600 500 400 300 200 100 P = f(t) N Im