What is the solution to the rational equation x/x^2-9 + 1/x-3= 1/4x-12? a. x=-9/7 b. x=0 c. x=15/7 d. x=9

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,

Ineed in figuring out this 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.