Judith A. Penna's 'Student's Solutions Manual for Marvin L. Bittinger's, Judith A. Beecher's, David J. Ellenbogen's and Judith A. Penna's 'College Algebra (Graphs and Models)'
“ Just as there is no loss of basic energy in the universe, so no thought or action is without its effects, present or ultimate, seen or unseen, felt or unfelt. ” ― Norman Cousins