see the attached figure to better understand the problem
we know that
In a parallelogram opposite angles are congruent, and consecutive angles are supplementary
So
in this problem
∠Y=°
∠W=∠Y
∠W=°
∠Z=∠X
∠Y+∠Z=°
∠Z=
∠Z=°
∠X=∠Z
∠X=°
therefore
the answer is
∠Y=°
∠W=°
∠X=°
∠Z=°
For this case we must find the unit cost of juice box of each option and compare:
Option A: 2 juice boxes for $ 0.66
Option B: 6 juice boxes for $ 1.92
Option C: 9 juice boxes for $ 2.97
Option D: 12 juice boxes for $ 4.20
The most feasible option is B. That is, buy 6 boxes for $1.92
Answer:
Option B