HELP ME PLEASE
I AM SO CONFUSED

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.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c