Quadrilateral L’ is the image of quadrilateral L under a dilation what is the center of the dilation

Which system of linear inequalities is represented by the graph?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

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?