Vivian, owner of Wonder Goods Company, employs Xena as an admin is trative assistant. In Vivians absence,

Question:

Vivian, owner of Wonder Goods Company, employs Xena as an admin is trative assistant. In Vivian’s absence, and without authority, Xena represents herself as Vivian and signs a promissory note in Vivian’s name. In what circum stance is Vivian liable on the note?