$\"\"$

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The birthrate function is $\"\"$ .

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(a).

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Find the age of the unmarried women with highest birth rate.

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The function is $\"\"$ .

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The general form of quadratic equation is $\"\"$ .

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Comapre the two equations $\"\"$ , $\"\"$ , $\"\"$ .

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Vertex is $\"\"$ .

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Axis of symmetry $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ years.

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The age of the unmarried women with highest birth rate is $\"\"$ years.

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$\"\"$

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(b)

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Find the highest birthrate.

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$\"\"$

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$\"\"$

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$\"\"$

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The highest birthrate is $\"\"$ years.

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$\"\"$

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(c).

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Find the value of $\"\"$ .

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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The evaluated value of $\"\"$ .

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$\"\"$

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(a) To botain the highest birthrate, the women age should be $\"\"$ years

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(b) The highest birthrate is $\"\"$ years.

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(c) The evaluated value of $\"\"$ .