$\"\"$

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The equation is $\"\"$ .

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$\"\"$ (Multiply each side by $\"\"$ )

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$\"\"$ (Divide each side by 350)

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$\"\"$ (Subtract 1 from each side) \ \

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$\"\"$ (Take natural log of each side)

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$\"\"$ (Apply inverse property: $\"\"$ )

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$\"\"$ (Multiply each side by negative one)

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$\"\"$

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$\"\"$ .

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$\"\"$

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The solution of $\"\"$ .