<span>The contractor can collect from the estate only. The contractor and Clay made an agreement only in oral form, not in written agreement. So, the contractor could not got after Clay. </span>
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
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Answer:
If the units are reworked, income will increase by $5,800.
Explanation:
Giving the following information:
Number of units= 1,000
Sell as-is= $4.3
Rework cost= $2.8
Selling price= $12.9
<u>Because the original cost will remain constant in both options, we will not take them into account.</u>
Sell as-is:
Effect on income= 1,000*4.3= $4,300
Rework:
Effect on income= 1,000*(12.9 - 2.8)
Effect on income= $10,100
If the units are reworked, income will increase by $5,800.
