So we can set up a simple equation for this, where the word “what” is a variable, x. This equation is 3 - x=11. Then we subtract 3 from both sides, giving us -x=8. We can divide both sides by -1, giving us x=-8. The answer would be -8. Hope this helped.
B to the second means b * b.
The short hand for b*b is b^2 on this editor or

c to the fourth means c * c * c *c
the short hand for c*c*c*c is c^4 on this editor or

The answer you want is b^2/c^4 in the answer box.
If this is wrong and you have choices, please list them and I will edit or put the answer in a comment.
47.5 cause in the two total rotations, it was 95 so you would divided 95 by two and get 47.5.
Sum of interior angles of a triangle = 180°
x+40+30= 180°
x+ 70=180
x= 180-70
x= 110°