From the cyclic quadrilateral MNOP above, find the value of x.
A.
16°
B.
25°
C.
42°
D.
39°
Correct answer is D
The sum of two opposite angles of a cyclic quadrilateral = 180°
\(\therefore\) (2x + 18)° + 84° = 180°
2x + 102° = 180° \(\implies\) 2x = 78°
x = 39°