Why are people on here so toxic?

Which is an equation for the nth terms of the sequence 12,15,18,21

In triangles abc and wxy, a=w and b=x which of the following must be true to prove abc=wxy by the aas theorem? a. ab=bc b. bc=xy c. ab=wx d.

Witch represents the inverse of the function f(x)=1/4x-12