The answer to the question is b
<span>a=7b+8c+9d-10
a = 8c + 16d - 10
solve for c then
8c = a - 16d + 10
c = (</span>a - 16d + 10) / 8
or
c = a/8 - 2d + 5/4
I think, not 100% sure, but I think it is square root (A/4pi)=r
Answer: 138
Step-by-step explanation:
