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Select the correct answer.

Paul is gathering data about moss growth in a local forest. He measured an area of 11 square centimeters on one particular tree and will come back in 6 months to measure the growth of the moss. If the area covered by moss multiplies by one and a half times each month, approximately how much area will the moss cover when Paul returns?

A. [tex]99.1 \, \text{cm}^2[/tex]
B. [tex]125.3 \, \text{cm}^2[/tex]
C. [tex]16.5 \, \text{cm}^2[/tex]
D. [tex]14.7 \, \text{cm}^2[/tex]

Answer :

To find out how much area the moss will cover when Paul returns in 6 months, we need to consider the growth of the moss over this period.

1. Initial Area: Start by noting the initial area covered by the moss, which is 11 square centimeters.

2. Growth Rate: The moss multiplies by one and a half times (which is a factor of 1.5) each month.

3. Number of Months: Paul will return in 6 months.

4. Exponential Growth Calculation: To find the total area covered by the moss after 6 months, we apply the formula for exponential growth. This means we multiply the initial area by the growth rate raised to the power of the number of months.

[tex]\[
\text{Final Area} = \text{Initial Area} \times (\text{Growth Rate})^{\text{Number of Months}}
\][/tex]

Plugging in the values:

[tex]\[
\text{Final Area} = 11 \times (1.5)^6
\][/tex]

5. Calculate the Result:

After performing the calculation, we find that the final area is approximately 125.3 square centimeters.

Therefore, the correct answer is B. [tex]\(125.3 \, \text{cm}^2\)[/tex].

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