All of the following expressions are equal to n except

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.

Me n o w. i need t h i s. 10 points

Tom drove 206 miles in 3.9 hours. estimate his average speed.