Question

The graph shows a cty's daily rate of use of electricity (n millions of dowats). Estimate the total daily usage of electridity by sumeming the area of rectangles. Use the et endpoints, then the right endpoints, then give the average of those resuts as the answer. Let the width of each rectangle be 2 hours a The estmate of the chy's total daily usagpe of electhicily tor he oven day, ound by averaging the estmates using wit and nght end-in Round to the nearest whole number as needed ) Enter your ansver in the answer bos pe here to search 84 6 5 3 R WE

Answer 1

Given that the graph shows a use of electricity in a city's daily rate (in millions of kilowatts) rightarrow We have to calculate the total daily usage of electricity by summing the area of rectangles rightarrow we have to use left end points and right end points to get the average use of electricity width of each rectangles is2 hours Using Left end points \r\n = 2(3.7 + 3.9 + 4.5 + 5.2 + 6.4 + 7.8 + 9.6 + 11.7 + 12.8 + 11.8 + 8.4 + 5.6) = 182.8 By using right end points 2(3.8 + 4.3 + 5.3 + 6.1 + 7.8 + 9.6 + 11.6 + 13.5 + 11.7 + 8.7 + 5.7 + 4.7) = 185.6 Therefore Average of left end point and right end point is = (182.8 + 185.6/2) = 184.2 million kw/hrs = almostequalto 184 million kw.hours