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If (K(t)=110-11t), what is (K(5))?

Answer and explanation

Correct answer: 55

Given \(K(t)=110-11t\). Substituting \(t=5\), \(K(5)=110-11(5)=110-55=55\). Therefore, the correct answer is 55. The value 66 would result only if the amount subtracted were 44, but here \(11\times 5=55\). Exam tip: When evaluating a function, substitute the given value for the variable using brackets.

Related tags

PolynomialsLinear ExpressionFunction EvaluationSubstitutionLinear DecayLinear Growth And DecayIntroduction To PolynomialsMathematics

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