HELP! Can anyone solve these with work?

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

Which one is true about the hexagons ?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?