What's the length of side b in the figure below? i posted a picture so you can view the actual problem. .

The answer would be letter c because you have to use orders of operations io on aka A^2+B^2=C^2
how to set it up woulf look like this: a^2= 7^2
B^2=?, and C^2=13^2
in other words a=7squared
B=?
and C=13 squared
so the problem would end up like this:.7*7+B*2=13*13
49+B*2=169
so now you subtract 169 from 49 and that equals B*2=√120