Please help me, i wanna to move one to the next grade, 10 points

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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.

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52