$\"\"$

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The cost of sending cell phone pictures is $\"\"$ .

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Where $\"\"$ is the number of sending pictures.

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Write the equation in function notation.

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Replace by $\"\"$ with $\"\"$ .

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$ (Original function)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$ (Original function)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ .

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Therefore,the values are $\"\"$ is $\"\"$ and $\"\"$ is $\"\"$ .

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Find domain and range:

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The domain of the function is $\"\"$ .

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The range of the function is $\"\"$ .

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$\"\"$

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The values are $\"\"$ is $\"\"$ and $\"\"$ is $\"\"$ .

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The function domain is $\"\"$ and range is $\"\"$ .