$\"\"$

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The revenue model $\"\"$ gives the revenue from $\"\"$ through $\"\"$ is $\"\"$ .

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The revenue model $\"\"$ gives the revenue from $\"\"$ through $\"\"$ is $\"\"$ .

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$\"\"$ corresponds to year $\"\"$ and $\"\"$ corresponds to year $\"\"$ .

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Find the total reduction in revenue.

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The total reduction in revenue is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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The total reduction in revenue is $\"\"$ .

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$\"\"$

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The total reduction in revenue is $\"\"$ .