Under the general law of contracts,a signed,written offer made by a merchant that allows acceptance at any time within a 90-day time period is not binding unless the offeree signs the offer.

Merchant

An individual or business that is involved in the wholesale or retail sale of goods.

Time Period

A specific interval of time marked by a start and end point, often used for purposes of study, assessment, or to denote durations.

Offeree

In contract law, the person to whom an offer is made.