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Let f(x)=9x+3x-4 and g(x) = 2x +5 A. Find (f+g)(x) B. Find (fg)(3) C. Find (g-f)(t)

Let f(x)=9x+3x-4 and g(x) = 2x +5 A. Find (f+g)(x) B. Find (fg)(3) C. Find (g-f)(t)

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