【单选题】Monthly sales have been found to follow a linear trend of y = 9.82 + 4.372x, where y is the number of items sold and x is the number of the month. Monthly deviations from the trend have been calculate...
【简答题】阅读理解。 Neighborhoods aren't like they used to be. Sometimes neighbors are complete strangers, even after years of living yards away. Believe it or not, neighborhoods were once tight-knit communities fu...