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A temperature model is (T(h)=38-2.5h). What will the temperature be at (h=8)?

Answer and explanation

Correct answer: 18

Substitute h=8 in the model: \(T(8)=38-2.5\times 8=38-20=18\). Therefore, the temperature is 18. Option 20 may result from multiplying 2.5 incorrectly. Exam tip: In a linear model, perform multiplication before addition or subtraction.

Related tags

Linear ModelLinear DecaySubstitutionDecimal MultiplicationPolynomialsLinear Growth And DecayIntroduction To PolynomialsMathematics

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