If my cost function is C(x)=5750+75x and my revenue function is R(x)=x(12500-50x), what are the interesting points and what are the break-even points? Please help and identify whether the points indicate an increase or loss in profits.

Other information is that I can only afford $200,000 in total costs per month.

Also, what would the marginal cost and marginal revenue be at 4,000 units? Does this change in production increase or decrease revenue?

Can you also indicate the optimal production level...? I am so confused... Please let me know if you need to see the full assignment rubric, it is a marginal writing analysis for Calculus for Business.