X=18 (3/8)
(8x/7) +9 = 30
subtract 9 from both sides
8x/7=21
multiply 7 from both sides
8x=147
divide 8 from both sides and you get
x=18 (3/8)
Answer: 
This is the same as
and it is also equivalent to 
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Explanation:
n is some placeholder for a number
one fourth of that number is
which is the same as
or
since 1/4 = 0.25
From here, we subtract off 2 to get
as one possible final answer.
Yes, it should be taken into account
You have to dive the x and the Y so R=7
The answer is 1,296, that's how many bacteria's there will be