revenue function..how do i find it??

Question

I have a price demand function of p(x)= -2.09x+519 and a cost function of c(x)=81x+9498 help!

Answer 1

These are the steps to solve the equation:
Revenue = -2.09x + 519
R = x (-2.09x + 519)
R = -2.09x^2 + 519x

Now, subtract the cost function:
R = -2.09x^2 + 519x - (81x + 9498)
R = -2.09x^2 + 438x - 9488

I've tried graphing this on my TI calc, but haven't got the window settings right.

The domain appears to be all real numbers.

Regards,
~ Mitch ~