(fog)(2) if f(x) = 3x + 1 and g(x) = x ^ 2 + 2

Evaluate the given expression if m=45 |-3m|

How do i do this activity, is appreciated

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.