Garrett was the first to figure out the riddle.  He was the first to put it all together, find the numbers, and then arrange them and discover what they meant.  The reward for the assignment was the extra credit bonus she had promised in class, but also being the first to figure it out … he was rewarded with finding Mrs. Karrington, his Geometry teacher, right where the hidden GPS coordinates led him to … waiting nude, at the time of day the riddle specified, naked and willing on the private hidden beach.