The number of Drosophila fruit flies in a controlled experiment assumes the following growth pattern when the food source is limited:
N(t) = 120
1+11e−0.4t
where t measured in days.
A. How many fruit files were there in the beginning?
B. What is the limiting number of fruit flies?
C. At what time was the population increasing most rapidly?
D. At what rate is the number of fruit flies increasing after 4 days?