3-2(3x+1)=19
How would I solve this equation?

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.

Simplify the expression. -2/5(10+15m-20n)

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.