A Certain Radioactive Substance Has a Half-Life of 75 Hours

question 57

Multiple Choice

A certain radioactive substance has a half-life of 75 hours. Find how long it will take, to the nearest hour, for 75% of the radioactivity to be dissipated if the amount of material x satisfies (t in hours) . Round your answer to the nearest hour. ​

• A) 182 hours
• B) 171 hours
• C) 157 hours
• D) 150 hours
• E) 31 hours

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Definitions:

Health Promotion Planning

The process of identifying and implementing strategies to improve the health and well-being of individuals and communities, often through behavior change interventions.

Wellness Nursing Diagnosis

A clinical judgment about an individual, family, or community in transition from a specific level of wellness to a higher level of wellness.

Harm Reduction Approach

A set of practical strategies aimed at reducing negative consequences associated with drug use or other high-risk activities.

Health Promotion Model

A theory that describes the multidimensional nature of persons as they interact within their environment to pursue health.