1. What is the differencebetween valid, void, voidable and unenforceable contracts?

2. Case Analysis:

a. Vokes was told that she would become a professional dancer if she took a very expensive dancing course offered by Arthur Murray, Inc. She was also continually told that she had great talent. The contract called for payments amounting to a total of $31,000. As it turned out, she never became a professional dancer and, in fact, had little or no talent. She sued Arthur Murray, claiming that the Arthur Murray people misrepresented the facts to entice her to enter the contract. The court agreed and found in her favor. Would Vokes have the right to void the contract? Explain.Vokes v. Arthur Murray, Inc.,212 So.2d 906 (FL 1968).

b.Anderson, a farmer, orally agreed to buy a used tractor from the Copeland Equipment Company for $475. Copeland delivered the tractor to Anderson, who used it for 11 days. During this period, Anderson could not borrow enough funds to cover the purchase price. Anderson therefore returned the tractor to Copeland. Both parties agreed that their sales contract was canceled when the tractor was returned. However, Copeland later claimed that under the doctrine of quasi-contract, Anderson was required to pay for the 11-days' use of the tractor. Do you agree with Copeland? Explain your answer.Anderson v. Copeland,378 P.2d l006 (OK 1963).