Determine which polynomial is a difference of two squares. (4 points) O X² + 14 O X4 - 14 O x2 + 49 Ox² - 49

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.