Help please 20 points to who answers not 10 points 20

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

What is the definition of exponential decay?

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.