How long is the perpendicular line segment between the parallel lines 4x-3y+12=0 and 4x-3y-18=0?

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

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.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl