The half life is 138 days, meaning exactly half of the material will decay after this time. Use this information to find the decay factor
:

Then after 250 days, there will be

grams left.
Answer:
3-9/1-2=-6/-1=6
Step-by-step explanation:
y2-y1/x2-x1
Answer:
24/6 = 4 pieces
Step-by-step explanation:
The answer is d because ya it just is
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