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3 an electricity company charges its customers a fixed base...

Question: 3 an electricity company charges its customers a fixed base...

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3. An electricity company charges its customers a fixed base charge of $6 a month, plus 10 cents per kilowatt-hour (kWh) for the first 500 kWh, 11 cents per kWh for the next 500 kWh, and 15 cents for all additional kWh. Express the monthly cost E as a function of the amount r of electricity used. Then graph the function E for 0 < x 3 2000. Explain how your graph represents your function E

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