For how many days does Bernice need to sell sea shells to earn 2430 dollars?
1 answer:
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Remark
Now we have to get two more zeros from somewhere. Let us say that the last factor is x^2 + 4 which gives a pair of complex answers. The complete quartic could be something like
y = (x + 4)(x + 1)(x^2 + 4)
The graph follows.
