The answer should be 11 since adding all the x’s up before 13 equals 11
The answer is B
Because when you graph it in the calculator you get x=-136 and that goes to one to one function on the graph
All of my resources are saying that this has no inverse.

go that much "clockwise", you'll end up at the 2nd quadrant,
the reference angle, is its reflective angle on the 1st quadrant
Can u send the question to be more clear