Roy D.

Roy D. joined Socratic 8.101369863013698 years ago. Roy D. hasn't written a biography yet.

185,891 students helped

Level 5 in Algebra

Level 4 in Precalculus

Level 3 in Statistics

Level 2 in Chemistry

Level 2 in Calculus

Level 1 in Trigonometry

Level 1 in Astronomy

Level 1 in Geometry

Level 1 in Biology

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