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, n, at 8:00 am? How many bacteria were there (1 point)

Answer 1

The equation that represents the number of bacteria, n, at 8:00 am can be written as:

n = 120 * 2^(t-9)

Where t represents the number of hours after 9:00 am.

To find the number of bacteria at 8:00 am, we can substitute t=8 into the equation:

n = 120 * 2^(8-9)
n = 120 * 2^(-1)
n = 120 * (1/2)
n = 60

Therefore, there were 60 bacteria at 8:00 am.