C.add10 is the correct answer
I think this is factorials
so an example would b....... 1*2*3*4*5.... ect
hope this helps
Answer:
x = 45
Step-by-step explanation:
Straight line has 180 degrees; so if you add all the angles up:
2x + x + x = 180
4x = 180
x = 45 degrees
Sure what is it there is no pictuer