$\"\"$

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Observe the table,

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Geraldo, Olivia, and Nikki have had two tests in their math class is shown.

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a.

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Write a matrix for the information.

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The matrices are $\"\"$ and $\"\"$ . $\"\"$

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b.

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Find the sum of the scores from the two tests.

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$\"\"$ (Add : $\"\"$ )

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$\"\"$ (Simplify)

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Hence the sum of the two test scores is $\"\"$ . $\"\"$

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c.

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Find the difference in scores from test $\"\"$ to test $\"\"$ .

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$ (Simplify)

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Hence the difference of the two test scores is $\"\"$ . $\"\"$

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a. $\"\"$ and $\"\"$ .

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b. The sum of the two test scores is $\"\"$ .

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c. The difference of the two test scores is $\"\"$ .