The graph shows a city's daily rate of use of electricity (in millions of m 14 Q kilowatts). Estimate the total daily '3 12 Q usage of electricity by summing the g 10 area of rectangles. Use the left g a D\" endpoints, then the right endpoints, 3'; then give the average of those 3 6 results as the answer. Let the E 4 width of each rectangle be 2 hours. 5 2 Midnight4AM. 8AM. Noon 4PM. 8P.M.Midnighl E) The estimate of the city's total daily usage of electricity for the given day, found by averaging the estimates using left and right endpoints. is D million kw-hrs. (Round to the nearest whole number as needed.) Use the definite integral to nd the area between the x-axis and f(x) over the indicated interval. Check first to see if the graph crosses the xaxis in the given interval. f(x) = 2ex 4-, [ 2,2] The area between the xaxis and f(x) is |:. (Do not round until the nal answer. Then round to three decimal places as needed.)