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If (I(t)=3t+12), what is (I(t)) at (t=6)?

Answer and explanation

Correct answer: 30

Given \(I(t)=3t+12\), substitute \(t=6\): \(I(6)=3\times6+12=18+12=30\). Therefore, 30 is the correct option. The value 24 may result from an incorrect addition after multiplication. Exam tip: substitute the given value for the variable, then follow the order of operations.

Related tags

PolynomialsLinear ExpressionSubstitutionFunction ValueLinear GrowthLinear Growth And DecayIntroduction To PolynomialsMathematics

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