x < - 34
x > - 43
x > - 34
x > - 12
Correct answer is C
f(x)g(x) < 1
∴ 2x+46x+7 < 1
= 2x + 4 < 6x + 7
= 6x + 7 > 2x + 4
= 6x - 2x > 4 - 7
= 4x > -3
∴ x > -34
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