Joe and Sally have come to an agreement: Joe promises to pay Sally $20,000 for her car. Joe paid Sally a $5000 deposit and the balance is payable next Friday at 2 pm when Sally will transfer her car to Joe. Sally has changed her mind. She tells Joe she is not going to transfer the car to him. Joe is suing Sally for breach of contract. At trial, the evidence shows that the car was worth $17000 on the Friday that the car was supposed to be delivered. If Joe succeeds in proving that Sally breached the contract how much will the court award in expectation damages ?