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If (T(t)=30+2t), when will (T(t)=46)?

Answer and explanation

Correct answer: \(t=8\)

Given \(T(t)=30+2t\) and \(T(t)=46\), set \(30+2t=46\). This gives \(2t=16\), so \(t=8\). Therefore, \(t=8\) is correct. For example, substituting \(t=6\) gives \(T(t)=42\), not 46. Exam tip: equate the function to the required target value first, then solve the linear equation for \(t\).

Related tags

Linear EquationsLinear GrowthPolynomialsAlgebraTime VariableLinear Growth And DecayIntroduction To PolynomialsMathematics

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