Multiply 3x by -6, it gives you -18 so I'm going to say D
3/6 because there are 6 sides and there are 3 numbers that you want to roll. They are even numbers so if you want to roll half of the numbers but not the other half well you have 3/6
M<b=19 (Supplementary Angles)
m<c=101 (Triangle Angle Sum Theorem)