Pwease help me answer these ​

Use the distributive law to multiply. 3(4x + 5y + 6)

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′?

Factor the expression using the gcf. the expression 21m−49n factored using the gcf