Find the Present Value of the Future Value

question 402

Multiple Choice

Find the present value of the future value.
-The decay of 291 mg of an isotope is given by A(t) = 291e-0.022t, where t is time in years since the initial amount of 291 mg was present. Find the amount (to the nearest milligram) left after 38 years.

• A) 126
• B) 63
• C) 285
• D) 123

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Definitions:

Asymmetrical Distribution

A situation in statistical data where the values do not mirror each other across a central point.

Positively Skewed

A distribution where the majority of scores fall on the low end of the distribution and the asymmetrical tail extends into the positive side of the graph.

Negatively Skewed

A distribution where the majority of scores fall on the upper end of the distribution and the asymmetrical tail extends into the negative side of the graph.

Quantitative Variables

Variables defined using numeric values or scores.