SAT Math Practice Question #2166 (Medium) | Test Citadel
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SAT Math Difficulty: Medium

Digital SAT Math Practice Question #2166

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An author receives a signing advance of $5,000 plus a royalty of $1.75 for each copy of their book sold. If the author's total earnings reached $12,000, how many copies were sold?
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Socratic AI Engine Step-by-Step Derivation
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Translate English directly to algebra: 'per' means multiply by variable, 'initial/flat' means add constant.

Masterclass Solution & Distractor Trap Analysis

Equation: $5000 + 1.75b = 12000 \implies 1.75b = 7000 \implies b = 7000 / 1.75 = 4,000$ copies....

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

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