Answer:
The answer is 2.3
Explanation:
The model for the population of bacteria is growing by
P= 100 x e^.60t
where P is the number of colonies and t is measured in hours.
Now, we need to find after how many hours will 400 colonies be present
So, Putting value of P = 400 in the above model and obtain the value of t
-> 400 = 100 x e ^.60t
-> 4 = e^.60 t
Take the natural log of ln on both sides
--> ln 4 = ln e ^.60 t
--> ln 4 = .60t
t= ln 4 / .60
T= 2.3
