Rosa sends an offer to Kellen that requires acceptance to be made by U. S. mail. Kellen accepts in a timely manner but sends the acceptance by FedEx which delivers the acceptance to Rosa two days faster than the U. S. mail would. Has Kellen accepted Rosa's offer?

 Yes

Explanation:

U.S. mail is the postal services of Unites states that delivers mails to different states of the Unites Stares. FedEx is also a delivery service that provides tracking mechanism to customers for tracking their package.

According to the question,Rosa has accepted offer of Kellen as she sent acceptance through FedEx instead of U.S. mail as it as faster delivery rate than U.S.mail .Thus, the acceptance reached two days earlier in comparison.

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