$\"\"$

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(a)

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The weekly cost C of producing x units in manufacturing process is $\"\"$ .

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The number of the units x produced in t hours $\"\"$ .

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Find $\"\"$ .

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$\"\"$ $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ . \ \

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The function $\"\"$ .

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The composite function $\"\"$ represents the amount of weekly cost as a function of the number of units produced in the amount of time in manufacturing process.

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$\"\"$

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(b)

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Find the cost of the units produced in 4 hours is $\"\"$ .

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The composite function $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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The cost of the units produced in 4 hours is 12750.

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$\"\"$

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(c)

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The composite function $\"\"$ .

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The amount of cost $\"\"$ is $\"\"$ dollars.

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The cost 15,000 dollars produced in t hours is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ hours.

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The cost 15,000 dollars produced in 4.75 hours. $\"\"$

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(a) The composite function $\"\"$ .

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(b) The cost of the units produced in 4 hours is 12750.

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(c) The cost 15,000 dollars produced in 4.75 hours.