Answer:
72y2-45
Step-by-step explanation:
9y2 + 9(7y2 - 5)
you multiply the 9 by the stuff in the parentheses
9y2 + 63y2 - 45
the answer is 5065.72
b=3/4=0.750
or
b=1
hope this helps
The Answer to this problem is BN=3.8 Units.
The correct answer is D