SOLUTION: If f(x) = 3x - 9 and g(x) = x2, what is (g º f)(5)?

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Question 943619: If f(x) = 3x - 9 and g(x) = x2, what is (g º f)(5)?
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x) = 3x - 9 and g(x) = x^2, what is (g º f)(5)?
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g[f(x)] = g[3x-9] = (3x-9)^2 = 9x^2 - 54x + 81
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Cheers,
Stan H.
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Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

If f(x) = 3x - 9 and g(x) = x2, what is (g º f)(5)?


f%28x%29+=+3x+-+9, and g%28x%29+=+x%5E2

f%285%29+=+3%285%29+-+9, or f%285%29+=+6

g%28f%285%29%29+=+g%286%29+=+6%5E2, or highlight_green%2836%29