Assume you have collected data pairs (x, y) on a certain variety of tree. X is the number of weeks since the tree was planted and y is the height of the tree in inches. A plot of data points with the best fit-line is given below. What is the numerical value of the height as predicted for the best-fit for an age of 20 weeks?

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?