Given:
The number of bacteria in a refrigerated food product is given by:

where (T) is the temperature of the food.
When the food is removed from the refrigerator, the temperature is given by:

where (t) is the time in hours.
We will find the composite function N(T(t))
So, we will substitute the function (T) into the function (N):

Expand the function then simplify it:

So, the composite function will be:

Now, we will find the number of bacteria after 4.1 hours.
So, substitute t = 4.1 into the composite function

So, the answer will be:
The number of bacteria after 4.1 hours = 28161 bacteria