I don't seem to understand this

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

For what values of x is x2 + 2x = 24 true?

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.