If you work for an hourly wage, your gross pay is a function of the number of hours that you work. What is the independent variable? What is the dependent variable?

The number of hours worked is the input you choose, so it is the independent variable. Gross pay changes depending on how many hours you work, so it is the dependent variable. Therefore, choice C is correct: the independent variable is the number of hours, and the dependent variable is gross pay.

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