The Number of Grams of a Radioactive Substance in Charcoal

question 18

Multiple Choice

The number of grams of a radioactive substance in charcoal from an ancient campfire after t years is given by . If the sample has only 15 grams of radioactive substance, then when was the campfire used?

• A) 5,752 years ago
• B) 4,706 years ago
• C) 12,040 years ago
• D) 5,229 years ago

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Definitions:

Viruses

Microscopic infectious agents that can replicate only inside the living cells of an organism and are capable of causing diseases.

Chickenpox

A highly contagious viral infection characterized by an itchy rash and red spots or blisters all over the body.

Hepatitis

Inflammation of the liver usually caused by viruses or toxins.

Influenza

A contagious respiratory illness caused by influenza viruses, characterized by symptoms like fever, cough, and body aches.