If sin0<0 and cos0<0, what quadrant is it in?

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?

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?

Solutions for 2x+7 less than or equal to 3x-5