Answer:
f(3x - 1) = 21x - 2
Explanation:
Step 1:
Given: f(x) = 7x + 5
Find: f(3x - 1)
Step 2: Then, f(x) = 7x + 5
Replace x ------> 3x - 1
f(3x - 1) = 7(3x - 1) + 5
f(3x - 1) = 21x - 7 + 5
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