Let x be the score for the test.

There are 2 x's because tests count twice as much as quizzes.

Do you understand?

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- Dec 17th 2008, 09:40 PM #1

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- Dec 17th 2008, 09:43 PM #2

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- Dec 17th 2008, 09:54 PM #3

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- Dec 18th 2008, 12:02 AM #4

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