How to Calculate Doubling Time

SOLVED:A researcher is trying to determine the doubling time for a population of the bacterium Giardia lamblia. He starts a culture in a nutrient solution and estimates the bacteria count every four hours. His data are shown in the table. (a) Make a scatter plot of the data. (b) Use a graphing calculator to find an exponential curve f(t) = a ·b^t that models the bacteria population t hours later. (c) Graph the model from part (b) together with the scatter plot in part (a). Use the TRACE feature