Which one of the pairs of angles below is adjacent?

Which one ? is the answer and how to find this answer

Point m is located at (-4, -6). what is located 4 units from point m? ( its on a coordinate plane by the way. )

Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05