Algebra-1

1. Determine the number of doubling periods:

Since the number of stars doubles every 100 million years and we want to know the number of stars after 300 million years, we divide the total time (300 million years) by the time interval for doubling (100 million years). 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 stars.

 is the initial number of stars. Here, .

 is the number of doubling periods, which we found to be

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