The graph shows a city's daily rate of use of electricity (in millions of kilowatts). Estimate the total daily usage of electricity by summing the area of rectangles. Use the left endpoints, then the right endpoints, then give the average of those results as the answer. Let the width of each rectangle be 2 hours 28 24 20 16- 12- Midnight 4AM SAM Noon 4PM 8PM Monight

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