Answer:
12/40×100= 30%
Step-by-step explanation:
12/40×100 = 12/2×5 =6×5= 30%
Step-by-step explanation:
this is the answer in the picture
X^2 - 4x +4 = (x - 2)^2
answer is B. second choice
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Did I understand correctly, the first number is:

?
in other words, this would be:

and if you drink half of it, then we divide this number by 2:

because 30/2=15
so you would have

still more than a daily dose!