Hi - if you could provide a diagram, i could definitely help you!
The answer would be $26.45.
What you do is on a calculator: 115 x 23%
Hope this helps :)
here we have 3X to 5 seventh power in radical form

we need write this in radical form we knwo that 
so ![3x^{5/7} =\sqrt[7]{3x^{5}}](https://tex.z-dn.net/?f=%203x%5E%7B5%2F7%7D%20%3D%5Csqrt%5B7%5D%7B3x%5E%7B5%7D%7D%20%20%20)
this will be the radical form .
The answer is letter C. symmetric