f (x) = 3x - 2
g(x) = 4x + 4
fg (4) = ?
fg (x) = f (4x + 4)
3( 4x+4) - 2
12x + 12-2
fg (x) = 12x+10
fg(4) =( 12 × 4) + 10
fg(4) = 48 + 10 = 58
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