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OpenStudy (linn99123):
Given f(x) = 3x + 4, what is f(8)? A. 4 B. 8 C. 15 D. 28 @Blank
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OpenStudy (anonymous):
substitute x=8 for 3x+4
OpenStudy (linn99123):
28
OpenStudy (anonymous):
that's your answer
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