Unit 1 Review:
2) Find f(g(x)) and g(f(x)) given f(x) = 2x+8 and g(x) = 1/2x - 4
Let "f(x) = 2x+8" and "g(x) = \\frac{1}{2x - 4}."
Then "f(g(x))=f(\\frac{1}{2x - 4}) =2\\cdot\\frac{1}{2x - 4}+8=\\frac{2+16x-32}{2x-4}=\\frac{16x-30}{2x-4}=\\frac{8x-15}{x-2},"
"g(f(x)) =g(2x+8)=\\frac{1}{2(2x+8) - 4}=\\frac{1}{4x+12}."
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