Answer:
A. 7°
Step-by-step explanation:
The figure shows a right angle. A right angle has a measure of 90 degrees.
90° = 40° + 4x° + 22°
90° = 62° + 4x°
90° - 62° = 4x°
28° = 4x°
28° ÷ 4° = x
7° = x
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