Persons Taking a 30-Hour Review Course to Prepare for a Standardized

question 97

Multiple Choice

Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 770. Find a linear function S(t) , which fits this data,
And which expresses score as a function of time.

• A) \(S ( t ) = - 3.75 t + 507.5\)
• B) \(S ( t ) = 3.75 \mathrm { t } + 507.5\)
• C) \(S ( t ) = 3.375 \mathrm { t } - 511.5\)
• D) \(S ( t ) = 3.375 t + 511.5\)

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Definitions:

Dependent Variable

In an experimental setting, the variable that is being tested and measured, which is expected to change as a result of manipulations in the independent variable.

Independent Variable

In experimental and research settings, the variable that is manipulated or changed to observe its effects on the dependent variable.

Exercise

Physical activity that is planned, structured, repetitive, and aimed at improving or maintaining physical fitness and overall health.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.