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If (g(x)=b-14x) and (g(4)=120), what will (g(11)) be?

Answer and explanation

Correct answer: 22

Given \(g(x)=b-14x\). Substituting \(x=4\), \(g(4)=b-14(4)=b-56=120\), so \(b=176\). Now, substituting \(x=11\), \(g(11)=176-14(11)=176-154=22\). Therefore, 22 is the correct answer. The value 36 may result from incorrectly using \(176-140\). Exam tip: first find the unknown constant \(b\) from the given function value, then substitute the required value of \(x\).

Related tags

Linear PolynomialFunction EvaluationLinear DecaySubstitutionAlgebraic ExpressionsLinear Growth And DecayIntroduction To PolynomialsMathematics

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