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OpenStudy (anonymous):
For all real numbers x, let x be defined as 2x^2 + 4. What is the value of 4? I don't know if the question is missing anything, because it's SAT practice.. (A) 16 (B) 18 (C) 20 (D) 36 (E) 72
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OpenStudy (phi):
It sounds confusing, but I interpret to be asking what is the value of 2x^2 + 4 when x is 4
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