Question 1:5 marks

Tony wishes to sell his Playstation as he has no use for it anymore, so he advertises it for sale for $100. Deborah phones and says she will buy it at that price. Tony says he has changed his mind about selling, but thinks that he will charge $120 for it if he decides to sell. Deborah then offers $110, but Tony says he needs to think about it. At the football game the next day, Tony offers Robin the Playstation for $115. When Robin says no, Tony says he will keep the offer open to Robin for seven days in exchange for a lift to the football next week. Robin agrees to this. A day later, Tony is suddenly in need of cash and phones Deborah, but before he can tell Deborah he accepts her offer of $110, she says that she has changed her mind and doesn't want to buy the Playstation.

Analyse each of these communications, and explain whether an agreement is formed between any of the parties.