Answer is in the attachment below. If you have any questions about the workings, just leave a comment below.
Answer:
product is 16 • t
Step-by-step explanation:
The first choice
Step-by-step explanation:
BC = AD (opposite sides in parallelogram is equal)
x + 8 = 2x + 1
8 - 1 = 2x - x
7 = x
x = 7
BC = x + 8 = 7 + 8 = 15