C-note is a slang term for the $100 banknote in U.S. currency. The C in C-note refers to the Roman numeral for 100, ... The term was derived from the Roman numeral C, meaning 100.

There, they'll exchange their currency for the one they need, ... But the currency exchange store may modify this rate to 1.20, meaning you can buy 1.20 Australian dollars for 1 U.S. dollar.