Answer:
c
Step-by-step explanation:
Adjacent angles of a parallelogram are supplementary, so you have
... 78° + 3y° = 180°
... 3y = 102 . . . . . . . subtract 78
... y = 34 . . . . . . . . divide by 3
The appropriate choice is
... C. 34
Factors of 56: 1, 2, 4, 7, 8, 14, 28, 56
Factors of 96: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
GCF(56, 96) = 8
