Doctor doo-a lot has
prescribed a full set of
contact lenses for
spencer, the 8-eyed
spider. the final bill
come to $400.80. how
much did each lens cost?

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.