What is the anwser to 8*8

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.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

∆red ≅ ∆ by rule will give brainiest if possible