Using your spreadsheet from Part $2$Graph your results by week on one axis and revenue on the other axisIn an additional column apply a $9$ week moving average to the revenue forecastAdd one more column and apply exponential smoothing using an a$=0\mathrm{.}20$ to the revenue forecastTo calculate your actual demand when calculating exponential smoothing.For the first $26$ weeks, assume actual demand was $5\%$ lower than your forecastFor the remaining weeks, assume actual demand is $10\%$ higher than your forecast.The easiest way to modify your forecast is to add another column for Actual DemandGraph #$2$ and #$3$ and compare the results to #$1$Explain the differences between your three different forecasts and draw a conclusion