Select 2 tables that do Not represent functions?

We must first determine the shape of a rectangular prisms _ a0 to find area of the prism

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?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps