adiocarbon dating of blackened grains from the site of ancient Jericho provides a date of 1315 BC ± 13 years for the fall of the city. What is the relative amount of 14C in the old grain vs the new grain in 2007 AD? (A0 = original radioactivity; At = radioactivity in 2007 AD).

and

Step-by-step explanation:

The equation of the isotope decay is:

14-Carbon has a half-life of 5568 years, the time constant of the isotope is:

The decay time is:

(There is no a year 0 in chronology).

Lastly, the relative amount is estimated by direct substitution:

5.6%

step-by-step explanation:

answer: 48

just remember to use pemdas:

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