devi f.

An olde fart of an engineer


585,352 students helped

Level 8 in Physics Level 4 in Algebra Level 4 in Chemistry Level 3 in Astronomy Level 3 in Geometry Level 2 in Trigonometry Level 2 in Prealgebra Level 2 in Astrophysics Level 2 in Organic Chemistry I Level 2 in English Grammar Level 2 in Biology Level 1 in Precalculus Level 1 in Anatomy & Physiology Level 1 in Environmental Science Level 1 in Calculus
103 Answers 5 Edits