f(x) = 3x + 2
g(x) = x² + 2x - 1
(f o g)(x) = f{g(x)}
(f o g)(-3) = 3((-3)² + 2(-3) - 1) + 2
(f o g)(-3) = 3(9 - 6 - 1) + 2
(f o g)(-3) = 3(2) + 2
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f(x) = 3x + 2
g(x) = x² + 2x - 1
(f o g)(x) = f{g(x)}
(f o g)(-3) = 3((-3)² + 2(-3) - 1) + 2
(f o g)(-3) = 3(9 - 6 - 1) + 2
(f o g)(-3) = 3(2) + 2
(f o g)(-3) = 8