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Which model represents the linear decay of a quantity at a constant rate over time?

Answer and explanation

Correct answer: \(Q(t)=240-8t\)

In linear decay, the power of \(t\) is 1 and its coefficient is negative. In \(Q(t)=240-8t\), the quantity falls by 8 per time unit. \(240-8t^2\) shows decay but is not linear. Exam tip: check the sign and power of \(t\).

Related tags

Linear DecayLinear GrowthPolynomialsSlopeAlgebraic ModelsLinear Growth And DecayIntroduction To PolynomialsMathematics

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