Richard G.

Retired Community College Physics Instructor, NSCC


953,366 students helped

Level 11 in Prealgebra Level 11 in Physics Level 9 in Algebra Level 8 in Geometry Level 3 in Precalculus Level 3 in Chemistry Level 2 in Trigonometry Level 1 in Statistics Level 1 in Astronomy Level 1 in English Grammar Level 1 in Calculus
125 Answers 2 Edits