Student: Ms! I looked at my grade, and it's really low.
Teacher: Yes, it is. You and I have talked about that a lot.
Student: I don't think I'll take the final. I can't pass unless I get 100%. See, because if your final is worth 25% of my grade, and I've got a 45 now, even a hundred would only raise me to a 70. So, should I take the final exam?
Teacher: Well, you certainly won't pass if you don't.
Student: Well, I don't think I'm going to take it.
Teacher: Suit yourself. But that was mad math skills you just showed there, bud.
Student: Yeah, I got a C in math!