Factor a number, variable, or expression out of the polynomial shown below. 7x - 21

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?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Find the values of the variables in the kite