Step 1:

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Rat populatin in a major metro city is $\"\"$ since $\"\"$ year.

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Here $\"\"$ is meaured in years and $\"\"$ measured in millions.

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Find the populatin in $\"\"$ .

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Substitute $\"\"$ in the $\"\"$ .

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$\"\"$

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Since $\"\"$ rats population is $\"\"$

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Find the populatin in $\"\"$ .

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Substitute $\"\"$ in the $\"\"$ .

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$\"\"$

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Since $\"\"$ rats population is $\"\"$

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Solution:

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The populatin going to be in 2018 is $\"\"$