$\"\"$

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(a) Randall has a total amount of $ $\"\"$ in his savings account and in a certificate of deposit.

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Savings account earns $\"\"$ % interest annually and certificate of deposit $\"\"$ % interest annually.

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Randall calculates his interest earnings for the end of the year will be $ $\"\"$ .

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Consider savings account amount as $\"\"$ and certificate of deposit amount as $\"\"$ .

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Therefore,

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

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System of equations are $\"\"$ and $\"\"$ .

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$\"\"$

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(b) The system of equations are $\"\"$ and $\"\"$ .

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

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Co-efficient matrix $\"\"$ .

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

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$\"\"$ .

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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 solution of the system of equations are $\"\"$ and $\"\"$ .

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Randall has saving account $ $\"\"$ .

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Randall has certificate of deposit $ $\"\"$ .

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$\"\"$

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(a)

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System of equations are $\"\"$ and $\"\"$ .

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(b)

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Randall has saving account $ $\"\"$ .

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Randall has certificate of deposit $ $\"\"$ .