Model Exponential Growth and Decay

question 214

Multiple Choice

Model Exponential Growth and Decay
Solve.
-A fossilized leaf contains 18% of its normal amount of carbon 14. How old is the fossil (to the nearest year) ? Use 5600 years as the half-life of carbon 14.

• A)13,829
• B)23,309
• C)1600
• D)35,538