PLZ HELP ME NOW THERE IS ONW IMAGE WITH MULTIPLE QUESTIONS

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.

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11