the greatest common factor of these numbers is 2
The answer for this question is 9 I
B is your answer bc 2 times 4 is 8 plus 2 minus 6 is
Just a guess, but the angle inside the triangle that's not x or y is the remaining angle after subtracting the 30 degrees shown. That makes the non labeled angle inside the triangle 150 degrees. since all triangles are 180 degrees, this means x and y add up to 30. They look roughly the same, so i'd guess they're both 15 degrees.