IV$.$ I.$$ Donna needs to have her tonsils removed, and she consults Dr$.$ Slycoff, who offers to perform the surgery for $$3000.$ Donna says she has no insurance and will not pay more than $$1500$ for the operation.$$ Dr$.$ Slycoff believes that the new state health plan will reimburse him for the difference between his normal fee and the amount Donna will pay, so he enters into a written contract with Donna to perform the tonsillectomy for $$1500.$ After the surgery, Donna only pays the doctor $$1250$ because she says that, while negotiating the surgery price, Dr$.$ Slycoff had also agreed to remove a large, unattractive mole from her nose. Also, Dr$.$ Slycoff discovers that the state health will not pay anything towards the operation.$$ Dr$.$ Slycoff sues Donna for $$250$ to try to collect the full amount agreed to in the written contract.$$

$7.$ Did the statute of frauds require that the contract Donna and the doctor be written to be enforceable? Explain your answer.

$8.$ Will Donna be able to argue in court that the doctor had agreed to remove the mole from her nose as part of their contract? Explain your answer.

$9.$ If before performing the operation, Dr$.$ Slycoff had discovered that he would not be reimbursed by the state health plan, could he have asserted the defense of mistake and had the contract rescinded? Explain your answer.