How much did captain hook have to pay for his earrings 8th grade worksheet?

The correct answer is A buck an ear.

This is supposed to be the amount of money and things he gave for it like a dollar and an ear that was pierced, but it is a pun because he's a pirate and when read it sounds like buccaneer which is related to pirates and sea journeys, so it's a funny pun.

He was an abolotionist, meaning he was against slavery (being a slave himself). He read a narrative that has details and experiences from when he was a slave, I recommend reading that if you want to know more about it!