No, you can't

You need that grade. Besides who knows what would your father do if he knew the full truth. And you are afraid of Jack.

"Thank you very much" you say to him "but I have to think about what car do I want."

"Sure, sweetie. If you need my help or advice, just ask me."

You nod but there are different things on your mind. Your brother hates you and wants to hurt you. He said as much. And now, you have to go to his room.

"Sure, dad" you say and with a heavy heart you go to your brother's room.