Answer:
58.6
Step-by-step explanation:
Use the formula 
solving for x (b)
=
≈58.58327
and 58.58327 rounds to 58.6
For this case we have the following function:

By definition, we have that the domain of a function is given by all the values for which the function is defined. The given function is not defined when the denominator is zero.
So:

Thus, the function is not defined at 
The domain is given by all real numbers except 2.
Answer:
The domain is given by all real numbers except 2.