A culture of a certain bacteria doubles every hour. At 9:00 a.m, there were already 120 bacteria. Which equation represents the number of bacteria?
Let's assume that the number of bacteria after a certain number of hours is denoted by N.
Since the culture of bacteria doubles every hour, we can represent the doubling process with the equation N = 120 * 2^h, where h is the number of hours that have passed.
Therefore, the equation that represents the number of bacteria is:
N = 120 * 2^h