PLZ HELP THIS IS MATH 7H FINAL DUE AT 2:00PM will give brainliest

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4

What is the result of adding the system of equations? 2x+y=4 3x-y=6