Please help me with these. I need them answered quickly I will give brainliest and 20 points to the person who solves this. Please I need help. There are 4 problems please solve them all.

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 x3+3x2−16x−48 divided by x−1?

Is the figure congruent? yes or no?