Algebra-1

1. Determine the number of growth periods:

Since the plant grows by a factor of 2 every week and we want to know its height after 4 weeks, the number of growth periods  is equal to the number of weeks, which is .

2. Use the exponential growth formula:

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

 is the final height of the plant.

 is the initial height of the plant. Here,  inches.

Click "Show Answer" to reveal the answer and analysis