Solve the followining system of equations algebraically y=^2+5x-17

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.

Which number completes the inequality? 2/3 < _ < 7/9

To decrease an amount by 16% what single multiplier would you use