Let f(x) = 4x-5 and g(x) = 3x, find (fg)(x). Answer:
f(x) = g(x)
4x-5 = 3x [ -3x, +5
x=5
f(x) = g(x) = 15
f(5) = 4 * 5 - 5 = 15
g(5) = 3 * 5 = 15
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"Let f(x) = 4x-5 and g(x) = 3x, find (fg)(x)."
f(x) = 4x - 5 g(x) = 3x
f(g(x)) = 4*g(x) - 5
f(3x) = 4*(3x) - 5 → 12x - 5
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