What is the exponential function
 that best models the number of
 gnats the scientists have gathered
 after the number of hours listed?
 a)use demos to determine the exponential equation that best fits the data in the table. What is the equation? 
 b)
 How many hours will it take
 for 200 gnats to gather?
 Hours~ 0,1,2,3,4
 Number of gnats~ 12,20,35,60,80