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Can anyone help me answer these two trigonometry math word problems and show all my work for both?

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1 Answer

Raymond,
              We want to find the value of x that makes P(x) = 3,800,000. So we have 
 
3,800,000=x2-4000x+7,800,000, subtracting 3,800,000 from both sides
 
x2-4000x+4,000,000 = 0 The solution of this quadratic is x=2000 is the number of items sold
 
Jim

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