Valid but unethical, and therefore enforceable in court.

Voidable at the option of either party if they change their mind.

Illegal and void as it violates antitrust laws and public policy.

Enforceable as long as both parties are sophisticated business entities.

Voidable at Janet's option if she can prove she lacked capacity at the time.

Voidable only if the guardian objects within 30 days.

Valid and enforceable if the buyer was unaware of Janet's incompetency.

Void, meaning it has no legal effect from the beginning.

Sarah is stuck with the contract.

Sarah can void the contract if she can prove she had any alcohol in her system at the time of signing.

Intoxication is always grounds for voiding a contract, regardless of degree.

Sarah can void the contract only if she was so intoxicated that she did not understand the nature and consequences of the transaction, and the other party had reason to know of her impairment.

The car dealer can disaffirm the contract.

Marcus has to honor the contract because he said he was 18.

Marcus can disaffirm the contract because minors have the right to disaffirm contracts even if they misrepresented their age in most jurisdictions.

When Marcus turns 25, he can then disaffirm the contract.

Mike

has accepted Sarah's offer and a contract is formed for $5,000

Mike

has made a counteroffer, which terminates Sarah's original offer

Mike

has rejected Sarah's offer, but Sarah's original offer remains open for

acceptance

Mike

has accepted Sarah's offer conditionally, and Sarah must respond within a

reasonable time

A

company promises to donate $10,000 to charity with no expectation of anything

in return

Peter promises to pay his neighbor $200 because the neighbor

helped him move last month (after the move was completed)

 Mary agrees to sell her laptop to Tom for

$800, and Tom agrees to pay $800 for the laptop

John

promises to give his nephew $1,000 as a birthday gift

A

promise to pay an additional $500 for work already completed under an existing

contract with no modifications

A

promise to provide consulting services in exchange for a promise to provide

office space

A

promise to pay $100 in exchange for a promise to deliver goods

A

promise to refrain from smoking cigarettes for one year

When

the acceptance is dispatched (sent) by the offeree using an authorized means of

communication

When

the acceptance is postmarked by the postal service, regardless of the

communication method used

When

the acceptance is received by the offeror

Only

when the offeror acknowledges receipt of the acceptance in writing

The offer must include a specific dollar amount and be made

by a business entity

The offer must be in writing and signed by the offeror

The

offer must be communicated to a specific person and remain open for at least 30

days

The

offer must be definite and certain in its terms, communicated to the offeree,

and demonstrate intent to be bound