Question

If f(x) = x2 − 2x + 9 and g(x) = 8 − x, what is (f o g)(−4)?

Answer 1

121

Answer 2

@loop_51 might want to check your work...

Answer 3

\[f(x) = x^2-2x+9\]\[g(x) = 8-x\]To make \((f\circ g)(x)\), we write out \(f(x)\) and replace \(x\) with the value of \(g(x)\) everywhere we see it.
\[(f\circ g)(x) = (8-x)^2-2(8-x)+9\]Now plug in \(x=-4\) and evaluate.

Answer 4

129?

Answer 5

That's what I get.

Answer 6

yah my bad 129