Solve. -In the Formula a = Iekt, a Is the Amount

question 172

Multiple Choice

Solve.
-In the formula A = Iekt, A is the amount of radioactive material remaining from an initial amount I at a given time t and k is a negative constant determined by the nature of the material. An artifact is discovered at a certain
Site. If it has 55% of the carbon-14 it originally contained, what is the approximate age of the artifact?
(carbon-14 decays at the rate of 0.0125% annually.) (Round to the nearest year.)

• A) 4783 yr
• B) 2077 yr
• C) 4400 yr
• D) 3600 yr

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Definitions:

Return

The gain or loss on an investment over a specified period, expressed as a percentage of the investment’s cost.

Risk

Uncertainty about loss or injury.

Debt Capital

Capital raised through borrowing, typically in the form of loans or bonds, that must be repaid with interest.

Marketable Securities

Low-risk securities with short maturities.