I think it would be A because if you multiply the square by a 30 thinking there all the same space between it will give u 120 square yards
The answer would be slope= -5/4
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4 * 2 = 8
8 + 5 = 13
B, is the correct answer
Answer:

Step-by-step explanation:
The half life is the amount of time it takes a substance to decay to half of its original amount.
Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.
So, the fraction that will be left after 1000 years is 