Which of the Following Correctly Describes the Impact of Motorcycle

question 17

Multiple Choice

Which of the following correctly describes the impact of motorcycle helmet use?

• A) Helmet usage is associated with a 10 percent reduction in serious head injuries.
• B) There have been no reported fatalities from motorcycle collisions in which the riders were wearing helmets.
• C) Helmet usage decreases the risk of serious head injuries but increases the risk of cervical-spine injuries.
• D) Helmet usage results in a more than 50 percent reduction in serious head injuries.

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Definitions:

Unknown Quantities

Variables in mathematical equations or problems that are not yet determined or are to be solved for.

Proportion

A part, share, or number considered in comparative relation to a whole, often expressed as a fraction or percentage.

Unknown Quantities

Variables or values in mathematics and science that are not known and need to be solved for in an equation or experiment.

Proportion

A statement that two ratios or fractions are equal.