An electric company charges a certain rate per kilowatt-hour (kWh) of electricity used and an administrative fee of $3.50. The company charged zhao $63.25 for using 800 kWh of electricity. Zhao uses the equation, 63.25 = 800r + 3.50 to represent the situation. What does the variable r represent in the equation?

Variable represents the slope of the equation.

Step-by-step explanation:

Given that the administrative fees that company charge is $3.50.

Also, the Zhao has a bill of $63.25.

The equation used by Zhao is

We can compare the equation of a line in the slope-intercept form.

We can see the y-intercept is $3.50 that is a fixed cost. And the company charged $63.25 that is the dependent variable.

Also, variable that is the rate per kilowatt-hour (kWh) represents the slope of the equation.

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step-by-step explanation:

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