Calculate the mean of the following. 3,5,6,4,7,3,9,8

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.

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

5x−4≥12 or 12x+5≤−4 can you with this problem