Gunther's average on ten quizzes is 7.8. Each score is a positive whole number less than or equal to 10. He remembers that he scored at least one 5, at least three 7's, at least two 9's and at least one 10. What is the sum of all the distinct possible values for Gunther's median quiz score

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.