Answer:
10
Step-by-step explanation:
6 in the first, and 12 in each of the other
That means 6 + 12 + 12 = 30
Since there are three stacks, divide 30 by
3
30/3 = 10
There will be 10 books in each stack
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second one
C. y - 5= 5/3 ( x - 3 )
I used a graphing calculator
