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Please help us to continue this great world-wide educational effort. Why U charges no tuition or fees. We exist entirely through the generosity of people who believe that creating the highest quality tutorials in math and science is worthy of our support. Why U is a 501(c)3 non-profit charitable organization so your contribution is tax-deductable.

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Why U
PO Box 1689
Winter Park, FL 32790-1689

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