The function could be used to model this situation is D. y = 2ˣ.
The function that could be used to model the situation where the number of bacteria, y, in a certain area doubles every hour, x, is: D. y = 2ˣ
This function represents exponential growth, where the number of bacteria doubles every hour.
The variable x represents the number of hours, and 2^x represents the doubling of the bacteria population over time.