$\"\"$

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The functions $\"\"$ and $\"\"$ .

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Find $\"\"$ .

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$\"\"$

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Since $\"\"$ is a quadratic function, the domain is all real numbers. $\"\"$

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Find $\"\"$ .

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$\"\"$

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Since $\"\"$ is a quadratic function, the domain is all real numbers. $\"\"$

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Find $\"\"$ .

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$\"\"$

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Since $\"\"$ is a polynomial function, the domain is all real numbers. $\"\"$

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Find $\"\"$ .

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$\"\"$

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All possible values of $\"image\"$ is domain of a function.

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Find which number make the fraction undefined, create an equation where the denominator is not equal to zero.

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$\"\"$ .

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Subtract 9 from each side.

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$\"\"$

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The domain of $\"\"$ is all real numbers except $\"\"$ . $\"\"$

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$\"\"$ and the domain is all real numbers.

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$\"\"$ and the domain is all real numbers.

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$\"\"$ and the domain is all real numbers.

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$\"\"$ and the domain is all real numbers except $\"\"$ .