What is the answer to this question?

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.

Don't know how to find x given these segment lengths

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?