SOLUTION: A company's costs, in millions of dollars, are given by the equation, C=x^2-3x-27, where x is the number of items sold, in thousands. What are the costs when 1,000 items are sold?

Question 724601: A company's costs, in millions of dollars, are given by the equation, C=x^2-3x-27, where x is the number of items sold, in thousands. What are the costs when 1,000 items are sold? and 1,500 items are sold?
So far I have used 1 and 1.5 and substituted into the equation but I am getting negative numbers is that correct?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A company's costs, in millions of dollars, are given by the equation, C=x^2-3x-27, where x is the number of items sold, in thousands. What are the costs when 1,000 items are sold? and 1,500 items are sold?
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C(x) = x^2-3x-27
C(1) = 1-3-27 = -29
C(1.5) = 2.25 - 3*1.5 - 27 = 2.25 - 4.5 - 27 = -29.25
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Note: If x is in thousands, these answers are what you get.
As costs the answers do not make much sense. Maybe x
should be 1000 instead of 1 and 1500 instead of 1.5
That way your cost figures would be positive. Try it.
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Cheers,
Stan H.
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