After their stage two exam Apoa and two of her pals bounced through the front door full of beans. The normally placid Apoa had her volume button up to 11 and they were all speaking simultaneously at great speed. (The other context where Apoa gets like this is during a card game.) The main thing that amused them about the exam was the formula question where everyone else had said the answer was:

3x + 1

but Apoa had put:

x + 2 + (x - 1 + x)

which, you'll realise, is a rather complicated way of saying 3x + 1. Hope the examiners realise that.

B-)