algebra
posted by kozy .
Essay; show all work. Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 7x3 + 6x2 – 6x – 3. The shop estimates their costs for that quarter to be given by 6x2 – 9x + 9. For the second quarter, find and simplify a polynomial that will represent their profit.

algebra 
MathMate
Gross Revenue, r(x)=7x3 + 6x2 – 6x – 3
Costs, c(x) = 6x2 – 9x + 9
So
Profit = revenue  costs
=r(x)c(x)
=(7x3+6x2–6x–3)  (6x2–9x+9)
Add like terms and simplify.
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