The Model Describes the Amount of a Radioactive Substance

question 110

Multiple Choice

The model describes the amount of a radioactive substance (in grams) remaining after t hours. Which one of the following written statements best describes this population?

• A) The amount of radioactive substance decreases by 24% each hour.
• B) The amount of radioactive substance increases by 76% each hour.
• C) The amount of radioactive substance decreases by 0.76 each hour.
• D) The amount of radioactive substance increases by 24% each hour.
• E) The amount of radioactive substance decreases by 76% each hour.

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Definitions:

Dependent Variable

The variable in an experiment that is expected to change as a result of manipulations of the independent variable.

Fast-Food Consumption

The frequency at which individuals consume meals provided by fast-food restaurants.

Measurement

The process or the result of quantifying objects, phenomena, or relationships according to established rules and units.

Weight Gain

The increase in body weight over a period, which may result from growth, excess calorie intake, or other factors.