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Mathematics 18 Online
Pixel:

Combining Functions

Pixel:

1 attachment
Pixel:

\[2x ^{2}+9x+9?\]

Pixel:

is that the right equation after subtracting

dude:

No r = \(x^2+5x+14\) c = \(x^2-4x+5\) Q: (r-c) (5) Do: \(x^2+5x+14-(x^2-4x+5)\) You have to distribute the negative first to whats inside the parenthesis

Pixel:

-x2 +4x - 5

dude:

Ya Then combine like terms

Pixel:

9x+9

dude:

Yeah Now substitute 5 into it

Pixel:

45+9 so 5400

dude:

Totally 5400

Pixel:

so A

Pixel:

it's measured in hundreds of dollars dood

Pixel:

so (5) = 500

Pixel:

i think

Pixel:

1 attachment
dude:

Oh then yeah

Pixel:

so A?

dude:

5400 profit

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