Answer:
the correct is D. 280
Step-by-step explanation:
When the inputs are 1 and 0, the output is zero.
x + 4 = 12 Subtract 4 on both sides to get "x" by itself
x + 4 - 4 = 12 - 4
x = 8
64°
Angles in a straight line add up to 180° so 180° - 116° = 64°
