If two angles form a linear pair, then they are adjacent and
a.
congruent
c.
supplementary
b.
perpendicular
d.
complementary

If two angles form a linear pair, then they are adjacent and C. SUPPLEMENTARY.

Linear pair theorem states that if two angles form a linear pair, then they are supplementary. Supplementary angles are angles that add up to 180 degrees.

A linear pair is defined as two adjacent angles whose exterior sides for a straight line.

The answer is 41.7 because 1.39 times 30 is 41.7