Write the Algebraic Expression Described $360 ^ { \circ }$ If One Angle Measures

Write the algebraic expression described. Simplify if possible.
-A quadrilateral is a four-sided figure whose angle sum is $360 ^ { \circ }$ . If one angle measures $x ^ { \circ }$ , a second angle measures $2 x ^ { \circ }$ , and a third angle measures $9 x ^ { \circ }$ , express the measure of the fourth angle in terms of $x$ .

A) $( 360 - 11 x ) ^ { \circ }$
B) $( 360 + 12 x ) ^ { \circ }$
C) $( 360 - 12 x ) ^ { \circ }$
D) $( 12 x - 360 ) ^ { \circ }$

Correct Answer:

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