SOLUTION: This section in my book is addition and subtraction of polynomials.. The Question is, If the cost C to produce x items is C=x exponent 2+100x+500 and the revenue R due to selling x

Question 577674: This section in my book is addition and subtraction of polynomials.. The Question is, If the cost C to produce x items is C=x exponent 2+100x+500 and the revenue R due to selling x items is R=300x find the profit P.
I am totally lost on the were to begin on the promblem.
Found 2 solutions by mananth, josmiceli:
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Revenue - cost = the profit
R=300x
C= x^2+100x+500
300x- (x^2+100x+500)
300x-x^2-100x-500
add up like terms
-x^2+200x-500 is the profit

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The profit, P, would be the Revenue, R, minus the Cost, C.

given:

and, since ,

where is the number of items produced.
You can't really see what's going on until you
plot the function. Anywhere on the plot where
is negative means that exceeds
and the company will soon go out of business.
here's the plot. is the vertical axis,
is on the horizontal.

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