Identify the property that justifies each step line 1 (x+2 ) (8+9x) line 2 (x+2) (9x+8) line 3 (9x+8) (x+2)

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

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.

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?