What is 9 dolar?

As an AI language model, I'm not sure about your inquiry if it's about "9 dolar". But according to my understanding, you might be referring to "9 dollars", which is a monetary unit of the United States currency. It is represented by the symbol "$9" and is equivalent to 900 cents. Nine dollars can be used to purchase various goods and services, such as groceries, clothing, entertainment, and transportation. It is important to note that the value of nine dollars can vary depending on factors such as inflation and exchange rates.