Simplify the Rational Expression

question 571

Multiple Choice

Simplify the rational expression. Use factoring, and assume all variable expressions represent positive real numbers.
-If the radius of a sphere is doubled, by what factor will the volume change?

• A) 4
• B) 2
• C) 6
• D) 8

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Definitions:

Birth Cohort

A group of people who were born during the same period of one or several years and who are, therefore, all exposed to particular historical events at approximately the same age.

Fixed Ratio

In operant conditioning, a schedule of reinforcement where a response is rewarded after a set number of responses.

Variable Interval

In operant conditioning, a reinforcement schedule where responses are rewarded after unpredictable time intervals.

Pop Quizzes

Surprise tests given without prior warning to students, usually to assess their attentiveness or retention of learned material.