Algebra-1

1. Determine the number of doubling periods:

Since the bacteria doubles every 2 hours and we want to find out how many bacteria there will be after 8 hours, we divide the total number of hours (8) by the time interval for doubling (2). So the number of doubling periods  is .

2. Use the exponential growth formula:

The formula for exponential growth in this case is , where:

 is the final number of bacteria.

 is the initial number of bacteria. Here, .

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