UCC section help

i am new to the commercial code and am having a difficult time searching for the exact section #

i have a few questions and would take any help.

1-someone ordered a ping pong table from Sears to be delivered nov 4 but delivered wrong color nov 3 and sears said they would send correct color on the next day.......has it breached the contract Yes/No_____Section?

2-jewler has a written agreement to sell a item for 12k and gave the customer 60 days for the offer.....well before the date was over he sold it to someone else for 18k, is this a breach of contract yes/no----Section?

3-someone agrees in a phone call to buy a $900 laptop comp. is this contract enforceable yes/no______Section?

thank you guys very much and know i have put in time and effort to answer/search but 3 out of the ten i could not find....thanks

Hi -- Our rules normally unfortunately do not permit us to do academic, homework or school-related projects or questions.