Justify why log(6) must have a value less than 1 but greater than 0.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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.

If the value of cos330°is√3/2 then find cos 165°.