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If (K(t)=144-12t), what is (K(8))?

Answer and explanation

Correct answer: 48

Substitute 8 for t: \(K(8)=144-12\times 8=144-96=48\). Therefore, the correct answer is 48. The value 96 is only \(12\times 8\); it must still be subtracted from 144. Exam tip: To evaluate a function, substitute the given value for the variable and follow the order of operations.

Related tags

PolynomialsLinear ExpressionFunction EvaluationSubstitutionLinear DecayLinear Growth And DecayIntroduction To PolynomialsMathematics

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