Recently I came across this image which is a component of one of the illustrations I did for a series of math textbook covers for Pearson not to long ago. I had forgotten about it and found it as I was doing a search. I thought it would be fun to post since it reminds me of the days at amusement parks during the summer. I live pretty close to one and have spent my share of time in the bumper cars. Anyone venture an educated guess as to what the equation means?