$\"\"$ \ \

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A class reunion committee planing for $\"\"$ guests for its $\"\"$ -year reunion.

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Let $\"\"$ be the number of guest who choose blueberry pie.

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Let $\"\"$ be the number of guest who choose chocolate trifle.

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Let $\"\"$ be the number of guest who choose cherry cheesecake.

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Number of guest are $\"\"$ . \ \

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$\"\"$ . \ \

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Total cost of the desserts $\"\"$ .

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$\"\"$ .

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Total time taken for preparing desserts $\"\"$ .

\

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$\"\"$ .

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The system of equations are $\"\"$ , $\"\"$ and $\"\"$ .

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Coefficient matrix is $\"\"$ .

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Caluculate the determinant of matrix $\"\"$ .

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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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Cramer $\"\"$ s rule : Solutions of the system of equations $\"\"$ , $\"\"$ and $\"\"$ for $\"\"$ .

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Find number of guest who choose blueberry pie $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Number of guest who choose blueberry pie $\"\"$ .

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Find number of guest who choose chocolate trifle $\"\"$ .

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$\"\"$

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$\"\"$

\

$\"\"$

\

$\"\"$

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Number of guest who choose chocolate trifle $\"\"$ .

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Find number of guest who choose cherry cheesecake $\"\"$ .

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$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

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Number of guest who choose cherry cheesecake $\"\"$ .

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$\"\"$

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Number of guest who choose blueberry pie $\"\"$ .

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Number of guest who choose chocolate trifle $\"\"$ .

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Number of guest who choose cherry cheesecake $\"\"$ .