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| Question 668949:  Annual profit in thousands of dollars is given by the function, P(x) = -.1x2 + 50x - 300, where x is the number of items sold, x ≥ 0.
 I am suppose to explain -300?  I believe it has to do with the final costs, is this correct?
 Answer by ewatrrr(24785)
      (Show Source): 
You can put this solution on YOUR website!  Hi,
 Annual profit in thousands of dollars is given by the function,
 P(x) = -.1x2 + 50x - 300, where x is the number of items sold, x ≥ 0.
 the -300 would be the adjustments to the annual profits due to 'fixed cost'
 that is to say if NO items were sold..there would be a loss of $300,000
 and...solving -1x^2 + 50x - 300 = 0 would tell us how many need to be sold
 to break even.
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