in the product rule for exponents, what do you do to the coefficients? what do you do to the exponents?

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.

Someone . me. compound probability

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?