Answer:
The answer is producers need to know what consumers want so they can sell more and make more profit.
The question is incomplete. The complete question is :
A manufacturer believes that the cost function : 
approximates the dollar cost of producing x units of a product. The manu- facturer believes it cannot make a profit when the marginal cost goes beyond $210. What is the most units the manufacturer can produce and still make a profit? What is the total cost at this level of production?
Solution :
Given the cost function is :
Now, Marginal cost = 
So, if the marginal cost = $ 210, then the manufacturer also makes a profit and if it goes beyond $ 210 than the manufacturer cannot make a profit.
Therefore, we have to equate : 
So when x = 45, then C(x) = $ 8042.5
Therefore, the manufacturer 
to 45 units and 
This leads to a total cost of $ 8042.5
Answer:
The correct answer is National Service Provider.
Explanation:
The networks of Internet service providers could be considered as a super set of business networks, especially large corporations. The big difference is that a bank has to attend only to the traffic requirements between the networks of its own offices, while an ISP serves hundreds, thousands or millions of different clients, and it is important to guarantee the "tightness" of the various groups , so that they don't see each other directly, and in turn, everyone can access the Internet.
D. Slide transition I believe.
