Answer:
B. 7
Step-by-step explanation:
The figure is a rhombus, so the line AC is a bisector line of the angleBAD, so that means that the angleBAE and angleDAE have the same measure, and the angleBAD is the sum of angleBAE + angleDAE, so:
(9x + 2) + (9x + 2) = 130°
18x + 4 = 130°
18x = 130 - 4
18x = 126
x = 126/18
x = 7
