Question 1035400
The total revenues would be 

{{{R(x) = x(10-0.0001x)}}}

==> Total profits would be {{{P(x) = R(x) - C(x) = -010x - 5000 - 2x = -0.0001x^2 + 8x -5000}}}

To maximize profits, the company should produce {{{x = -b/(2a) = -8/(2*-0.0001)}}} = 40,000 markers.

The company should charge 10 - 0.0001*40,000 = $6 for each marker.

The company's maximum profit is {{{P(40000) = -0.0001*40000^2 + 8*40000 -5000 }}} = $155,000.