sanjay divided 5/8 pound of dog food equally into 3 dishes for a dog his dog can you please explain?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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.

∆red ≅ ∆ by rule will give brainiest if possible