Can anybody please solve these?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x