Numbers 20 - 22 please

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.

41/17 as a decimal rounded to the nearest hundredth

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?