What’s the distance between -2 and -15 on a number line?

In the figure dhg fhe which statement is true by cpctc

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

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?