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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]14.7 \, \text{cm}^2[/tex]

C. [tex]125.3 \, \text{cm}^2[/tex]

D. [tex]16.5 \, \text{cm}^2[/tex]

Answer :

To solve the problem of determining how much area the moss will cover when Paul returns after 6 months, we can follow these steps:

1. Understand the Initial Conditions: We know that initially, the moss covers an area of 11 square centimeters.

2. Determine the Growth Rate: The moss grows by one and a half times its current size each month. This means that every month, the moss area is multiplied by 1.5.

3. Calculate Growth Over 6 Months:
- For the first month: Multiply the initial area by 1.5.
- For the second month: Again multiply the result from the previous month by 1.5.
- Continue this process for a total of 6 months.

To simplify, you can use the formula for exponential growth, where you multiply the initial area by the growth factor raised to the number of months.

Mathematically, this can be expressed as:
[tex]\[ \text{Final area} = \text{Initial area} \times (\text{Growth rate})^{\text{Number of months}} \][/tex]
[tex]\[ \text{Final area} = 11 \times (1.5)^6 \][/tex]

4. Calculate the Final Area: After calculating the power and performing the multiplication, you find that the approximate area covered by the moss after 6 months will be around 125.3 square centimeters.

Therefore, the correct answer is:
C. [tex]\(125.3 \, cm^2\)[/tex]

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