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

Answer :

To determine how much area the moss will cover when Paul returns, we use the given information about the initial area and the growth rate.

1. Initial Area: The initial area covered by moss is 11 square centimeters.

2. Growth Rate: Every month, the area covered by moss multiplies by a factor of 1.5 (one and a half times).

3. Time Frame: Paul will come back in 6 months.

To find out how much area the moss will cover after 6 months, we'll use the formula for exponential growth:

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

Substituting the given values into the formula:

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

Now, calculate:

1. Calculate [tex]\( 1.5^6 \)[/tex]:
- [tex]\( 1.5^6 = 11.390625 \)[/tex]

2. Multiply this result by the initial area:
- [tex]\( 11 \times 11.390625 = 125.296875 \)[/tex]

Therefore, the area covered by the moss after 6 months is approximately 125.3 square centimeters.

Thus, the correct answer is:

A. [tex]\( \quad 125.3 \, \text{cm}^2 \)[/tex]

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