$\"\"$ \ \

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Consider $\"\"$ is the fixed delivery charge. \ \

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$\"\"$ is the cost of each tree. \ \

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$\"\"$ is the hourly labour charge. \ \

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The first subdivision equation is $\"\"$ . \ \

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The second subdivision equation is $\"\"$ . \ \

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The third subdivision equation is $\"\"$ . \ \

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Definition of augment matrix : \ \

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If $\"\"$ are the system of equations then the augmented matrix is $\"\"$ . \ \

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Augment matrix of the system of equations is $\"\"$ . \ \

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Apply $\"\"$ and $\"\"$ . \ \

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$\"\"$ \ \

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Apply $\"\"$ and $\"\"$ . \ \

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$\"\"$ \ \

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Apply $\"\"$ and $\"\"$

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$\"\"$

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Apply $\"\"$ .

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$\"\"$

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Apply $\"\"$ and $\"\"$ .

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$\"\"$ .

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Therefore, the delivery charge is $\"\"$ per job, the cost for each tree is $\"\"$ and the hourly labor charge is $\"\"$ . $\"\"$

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The delivery charge is $\"\"$ per job, the cost for each tree is $\"\"$ and the hourly labor charge is $\"\"$ .