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The linear equation that relates to the daily cost $\"\"$ in dollars, of the manufacturing the jeans to the number of $\"\"$ of jeans manufactured.

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Cost = variable cost + fixed cost

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$\"\"$ .

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Find the cost of manufacturing $\"\"$ pairs of jeans.

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The linear function is $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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The cost of manufacturing 400 pairs of jeans is $3700.

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Find the cost of manufacturing $\"\"$ pairs of jeans.

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The linear function is $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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The cost of manufacturing 740 pairs of jeans is $6420.

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The linear function is $\"\"$ .

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The cost of manufacturing 400 pairs of jeans is $3700.

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The cost of manufacturing 740 pairs of jeans is $6420.