Help please thanks :)

The table shows the distance traveled over time while traveling at a constant speed.

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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.