a) Use the equation A(t) = Aoekt to express the amount of Carbon-14 left from an initial N milligrams as a function of time t in years. (Round k to 6 decimal places or enter an exact value for k.) A(t) = b) What percentage of an original amount of Carbon-14 is left after 24, 000 years? (Round answer to the nearest tenth of a percent) % is left after 24, 000 years c) If an old wooden tool found in a cave contains 44 % of the original amount, approximately how old is the tool, within 10 years? Approximately years old Extension: Radiocarbon dating is not as easy as these exercises might lead you to believe. Research radiocarbon dating and consider discussing with your classmates or instructor why our model is somewhat oversimplified.

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