Find (f + g)(x) and (f- g)(x) for f(x) = 6r? + 5 and g(x) = 7 – 5x.

Which lines are parallel? justify your answer. lines p and q are parallel because same side interior angles are congruent. lines p and q are parallel because alternate exterior angles are congruent lines l and m are parallel because same side interior angles are supplementary lines l and m are parallel because alternate interior angles are supplementary.