Answer
$P(x)=85x-350000$
Work Step by Step
Since,we have computers sold function $C(x)=40x+350000$
and Revenue cost function $R(x)=125x$
Suppose $P(x)$ be the profit function.
$P(x)=R(x)-C(x)$
or, $=125x-[40x+350000]$
or, $=125x-40x-350000$
Hence, $P(x)=85x-350000$
