Answer
$f(x)=80+\frac{800}{x-110}$
$ f(30)=70$
Yes, the answer is the same.
Work Step by Step
The given expression is
$(80x-8000)\div(x-110)$
$\begin{matrix}
& 80 & & \leftarrow &Quotient\\
&-- &-- & \\
x-110) &80x&-8000 & \\
& 80x & -8800& \leftarrow &80(x-110) \\
& -- & -- & \leftarrow &subtract \\
& 0 & 800 & \leftarrow & Remainder
\end{matrix}$
We can write the solution as a function.
$\Rightarrow f(x)=80+\frac{800}{x-110}$
Replace $x$ with $30$.
$\Rightarrow f(30)=80+\frac{800}{30-110}$
Simplify.
$\Rightarrow f(30)=80+\frac{800}{-80}$
$\Rightarrow f(30)=80-10$
$\Rightarrow f(30)=70$
Yes, the answer is the same.
