Write a problem involving how much more than and solve it. explain how drawing a diagram you solve the problem

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.

Find the slope of the line passing through a pair of points

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?