If you have a contract then yes, you absolutely must fulfill the terms of the contract or you risk breaching which subjects you to civil liability.
Only in 9 states.. read your contract, it should be noted there.
An eviction notice need only be served. If there is white out on it, that may mean it was tampered with. The landlord can testify that he made a mistake and whited it out himself, which would cause the notice to stand.The only time something may be held unenforceable by reason of tampering or alteration is a mutual contract. An eviction notice is not a contract as much as it's a formal notice for you to leave.
YES. In most states, any contract dictating improvements or repairs to a house requires a 3-Day "Notice of Cancellation" unless this right is waived by the homeowner.
In most states, when you sign an automobile purchase contract there is a line on the contract that requires signing that is usually titled "Notice of Rescission Rights" that basically gives the seller the right to rescind the the contract if the seller is unable to assign the contract to a financial institution. However, the seller must give you notice of there intent to rescind within 10 days or the seller may forfeit their rescission rights.
The landlord can send the notice-to-quit for non-payment (14 days or less in most states), and not disturb the 2-month notice. They both remain in force.
The employer has to pay you whatever you are owed from time you have worked, but that is it, unless you have a contract that states otherwise (you probably do not).
No, that honour goes to the United States.
Depends on what the contract states.
Most states do not honour out-of-state permits.
Not knowing what state you are in...YES it can. Few states require "notice" if you are referring to "right to cure". None require NOTICE, we are goona repo yo ride. Notice is when they bug you for 60 days wanting to get you to pay, answer the phone, quit pretending its a wrong number,ect. IF you were in default of the contract, they can repo, even ONE day late, IF they want to.
It depends on whether there is a clause on the lease which states it automatically is renewed unless notice is given by either party to its termination.
Depends on the state and their marital status. In some states being married forms implied contracts and If a wife enters into a contract which would more likely than not effect the husband, the husband is included as a party to the contract.