Helppp pls this is due son

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

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.