Please see attachment somewhere around this question I could really use the help

Ineed with number 17 i don’t get it at alll

What is (28 + 7 + 6 + 3) x 1/2 show your work

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.