3x + 4 + 7x

please show your work and please get the answer right

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.

If 20% of a number is 35, what is 50% of that number?

Which statement justifies why angle ebc measures 90?