H: p-5 (p+4) = p-(8-p)​

Nine more than four times a number is the same as one less than twice the number. find the number?

If 25% of y is 30, what is 60% of y?

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.