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# Bobs Barber shop estimates their gross revenue for the second

Bob's Barber shop estimates their gross revenue for the second quarter to be given by the polynomial 2x^3+5x^2-x-1. The shop estimates their costs for that quarter to be given by 4x^2-9x-8. For the second quarter, find and simplify a polynomial that will represent their profit. Note: Profit=Revenue-costs

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Customer: replied 4 years ago.
I need to know the step by step in doing the problem.

The revenue is 2x³+5x²-x-1. The cost is 4x²-9x-8. To find the profit, you need to subtract the cost from the revenue.
(2x³ + 5x² - x - 1) - (4x² - 9x - 8) = (2x³ + 5x² - x - 1) + (-4x² + 9x + 8) = 2x³ + x² + 8x + 7

Do you need a longer explanation? If so, I can make a word file so I can format it better.
Customer: replied 4 years ago.
If you don't mind making a word file that would be great.
I'll get right on it.

Attachment: 2012-07-19_210330_barber.doc

Let me know what you think about it.