SAT Math Practice Question #2404 (Medium) | Test Citadel
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SAT Math Difficulty: Medium

Digital SAT Math Practice Question #2404

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Let $f(x) = 3x - 2$. Find $x$ when $f(f(x)) = 19$.
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Masterclass Solution & Distractor Trap Analysis

$f(f(x)) = 3(3x - 2) - 2 = 9x - 6 - 2 = 9x - 8$. Set $9x - 8 = 19 \implies 9x = 27 \implies x = 3$....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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