Answer
$0.055 x - 1.5×10^{-6} x^2$
Work Step by Step
From problem #76, the revenue is:
$0.15x-0.000002x^2$
We are also given the cost:
$0.095x-0.0000005x^2$
Thus, using the given formula for the profit (revenue minus cost), we get:
$P(x)=0.15x-0.000002x^2-(0.095x-0.0000005x^2)=0.055 x - 1.5×10^{-6} x^2$
