$\"\"$

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(a)

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To solve the initial population in $\"\"$ we can set $\"\"$ and use the equation $\"\"$ .

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Substitute the values in the equation.

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$\"\"$

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Therefore, the exponential growth model is $\"\"$ .

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$\"\"$

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(b)

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Population in 2015 :

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The population of the country in $\"\"$ can be calculated by substituting $\"\"$ in the equation

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$\"\"$

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$\"\"$

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Therefore, the population in $\"\"$ is $\"\"$ .

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$\"\"$

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(c)

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Relationship between $\"\"$ and change in population in the country :

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A negative rate $\"\"$ corresponds to population decline.

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Because $\"\"$ , the population is decreasing.

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$\"\"$

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(a)

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The exponential growth model is $\"\"$ .

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(b)

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The population in $\"\"$ is $\"\"$ .

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(c)

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A negative rate $\"\"$ corresponds to population decline.