Charles, one of your dumb friends. One day you were in class with him, and he turned to look at you. He was bald and appeared to be wearing a blue beanie. After tapping you on the shoulder to grab your attention, he talked softly so the teacher wouldn't hear him. With a dumbfounded expression, he asked, "Yo what is 5 - 3?" and referred to a piece of paper on his desk that read, "subtract 5 - 3 and explain how you got the answers using the number line above."