Anyone want 21 points? answer this

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account