Answer:
1.28f
if a term doesn't have a coefficient
it is considered that the coefficient
is 1
20% chance for the letter box and 25% chance for Number box.
Step-by-step explanation:

The diagonals of a parallelogram bisect each other so
4x - 7 = x + 2 and
5y - 8 = 3y
4x - 7 = x + 2 so 3x = 9 and x = 3
5y - 8 = 3y so 2y = 8 and y = 4