the cost C(x) in thousand pesos of producing x thousand books is given by C (x) = 10x - 0.2x^2. What is the marginal cost of producing 5,000 books?
anyone can assist me on this ...
You are nothing more than a freeloader.
Your overall behavior is disgraceful in my view.
You have posted a laundry list of problems showing absolutely no effort on your part.
It appears that either you are lazy or you are playing us for fools. Which is it?
You should be banded from this forum.