Capital structure increases the ability of the company to find new wealth- creating investment opportunities.
Because of supply and demand. More demand for a product makes the price go and and the supplier gives more because they get more
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
The only factor that can cause a change in quantity supplied is price, so increase in Qs results from a change in supply price.
The percentage profit = 18%
A profit is made on sale with selling price more than the purchasing price. The purchasing price is also known as the cost price.
Given the selling price = $225000
and the purchasing price = $190000
Since the selling price is more than the purchasing price, there is obviously a profit gained.
Now profit amount = Selling price - Purchasing price
= 225000-190000 = $35000
Profit percentage = (Profit / Purchasing price) x 100%
= (35000 / 190000) x 100%
= 18.42%
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