Implied Acceptance

Mont. Code Ann. § 28-2-503, under Communication of Consent -- Revocation of Proposal.

Mont. Code Ann. § 28-2-503

(1) Performance of the conditions of a proposal or the acceptance of the consideration offered with a proposal is an acceptance of the proposal. (2) A voluntary acceptance of the benefit of a transaction is equivalent to a consent to all the obligations arising from it, so far as the facts are known or ought to be known to the person accepting.