Math

9. Essay; show all work. Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 2x3 + 5x2 – x – 1. The shop estimates their costs for that quarter to be given by 4x2 – 9x – 8. For the second quarter, find and simplify a polynomial that will represent their profit.

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  1. in general ...
    profit = revenue - cost
    = 2x^3 + 5x^2 - x - 1 - (4x^2 - 9x - 8)
    = 2x^3 + x^2 + 8x +7

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    posted by Reiny

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