Posted by **joe hahira** on Monday, March 7, 2011 at 12:00pm.

Essay; show all work. Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 7x3 – 9x2 – 2x + 4. The shop estimates their costs for that quarter to be given by x2 + 7x – 5. For the second quarter, find and simplify a polynomial that will represent their profit.

- algebra -
**Henry**, Monday, March 7, 2011 at 10:36pm
P=(7X^3 - 9X^2 - 2X + 4)-(X^2 + 7X -5).

P=7X^3 - 9X^2 - 2X + 4 - X^2 - 7X + 5,

Combine like-terms:

P = 7X^3 - 10X^2 - 9X + 9,

- algebra -
**Henry**, Monday, March 7, 2011 at 10:39pm
P=(7X^3 - 9X^2 - 2X + 4)-(X^2 + 7X -5).

P=7X^3 - 9X^2 - 2X + 4 - X^2 - 7X + 5,

Combine like-terms:

P = 7X^3 - 10X^2 - 9X + 9,

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