Answer:
The answer is option 1.
Step-by-step explanation:
Given that total angles in a quadrilateral is 360°. So in order to find x, you have to substract the remaining angles from 360° :
[tex]5x + 110 + 110 + 70 = 360[/tex]
[tex]5x + 290 = 360[/tex]
[tex]5x = 360 - 290[/tex]
[tex]5x = 70[/tex]
[tex]x = 70 \div 5[/tex]
[tex]x = 14[/tex]
