A little confusing help please

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?