Plz answer my multiple choice question

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

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.

Identify the number 127 as a rational or irrational. explain