Monalisa cleans out her parents' fridge and cupboards to make sandwiches and cakes. Monalisa's mum Ann wants her to pay back for the ingredients, but she refuses. Nal contacted Ann directly and said, 'Monalisa has used all my ingredients, so please reimburse me $1000 out of the $4000'. Does Nal need to pay $1000 to Monalisa's mother, Ann?

On the morning of the play, Nal realizes she needs help setting up. A school's Parents Association email informs all parents that help is needed with tonight's play. The first 20 parents who help set up by 2.00 pm today will receive two free tickets. The student's older brother, Rob, performed in the play. He read the email and decided to watch. He assists with the play's setup at 12.00pm, before anyone else arrives. Is Rob entitled to the free tickets if he helps set up for the school play?