Answer: G. x = 11
Explanation:
The diagram of the table is shown in the attached photo for better illustration.
Referring to the diagram,
Angle 13x + 12 and angle y are on a straight line. Since the sum of the angles on a straight line is 180 degrees, it means that
y + 13x + 12 = 180
y = 180 - 12 - 13x
y = 168 - 13x- - - - -1
Since the top and the bottom are parallel lines, then angle y and angle 2x + 3 are alternate angles. Alternate angles are equal. Therefore
y = 2x + 3- - - - - 2
Equating equation 1 to equation 2, it becomes
168 - 13x = 2x + 3
2x + 13x = 168 - 3
15x = 165
x = 165/15
x = 11