Answer:
C. 152º
Explanation:
Supplementary angles add up to 180º
so that means...
Angle R + Angle S = 180
28 + x = 180
When we do 180 - 28 = 152º
Therefore the final answer is C, 152º
c
cause R+S=180 which is supplementary then we subtract from both side R and it will be S=180-28=152
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