Use the table for 12–15. Circumference (ft) 15 20 35 40 45 20 Height (ft) 15 20 17 22 28 12 The table shows the circumference and height of six trees in a forest. 12. Make a scatter plot and draw a trend line. 13. Write an equation for the trend line. ________________________________________ 14. What type of association does the trend line show? ________________________________________ 15. Predict the height of a tree that has a circumference of 40 fee