Answer:
6x - 3
Explanation:
to obtain f(3x - 4) substitute x = 3x - 4 into f(x)
f(3x - 4) = 3x - 4 , then
2(3x - 4) + 5 ← distribute parenthesis by 2
= 6x - 8 + 5 ← collect like terms
= 6x - 3
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