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weqwewe [10]
3 years ago
9

The population of rabbits on an island is growing exponentially. In the year 1990, the population of rabbits was 1200, and by 19

94 the population had grown to 1700. Predict the population of rabbits in the year 1996, to the nearest whole number.
Mathematics
1 answer:
kobusy [5.1K]3 years ago
5 0

Answer:

2023 rabbits

Step-by-step explanation:

The exponential model consists of the following expression:

y = A \cdot r^{t}

Where:

A - Initial population.

r - Increase rate.

t - Time

y - Current population.

The initial population and increase rate are, respectively:

1200 = A \cdot r^{0}

A = 1200

1700 = 1200 \cdot r^{4}

r^{4} = \frac{1700}{1200}

r^{4} = \frac{17}{12}

r = \sqrt[4]{\frac{17}{12} }

r \approx 1.091

The exponential model that predicts the population of rabbits is:

y = 1200\cdot 1.091^{t}

Lastly, the expected population for the year 1996 is:

y = 1200\cdot 1.091^{6}

y\approx 2023.624\,rabbits

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