Ervin practices hitting golf balls at the driving range. He hits the balls toward a far-away putting green. The scatter plot below shows the wind speed when Ervin strikes each golf ball and how close to the putting green each shot lands. A line of best fit for these data points, with equation y=1/3x+3 , is also shown on the plot. Ervin hits a golf ball when the wind gusts to 18 miles per hour. About how many yards from the putting green do the data suggest the ball will land?

A. 6

B. 9

C. 21

D. 45
PLZ HELP PLZ!