anyone????????

[josh123]

I know this is probably easy but I am not getting it.

Suppose that the total profit in hundreds of dollars from selling x items is given by P(x)=-x^2 + 6x -7. Find the marginal profit at x = 6.

 

[pka]

Marginal profit is the derivative of profit.
Thus find P’(6).

 

[douchey]

Hey Josh123, I did this to see if I can help and I got 600. Let me know what you get so I know if I did it right. It was good practice.

 

[mathman1]

I got $600 as well.

Hidey Ho!

 

[Gene]

Huh??????
p'(x)=-2x+6
Try again.

 

[josh123]

Gene,

Would it be 1200

 

[N.C.'s Math Wiz]

I agree with josh its 600.

 

[pka]

\(\displaystyle \L
p'(x) = - 2x + 6\quad \Rightarrow \quad p'(6) = - 12 + 6 = - 6\)

Are you all blind?
Gene and I have given you the answer.