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Which of the following polynomials represents linear decay of a quantity with time \(t\)?

Answer and explanation

Correct answer: \(120-8t\)

In \(120-8t\), the highest power of \(t\) is 1 and its coefficient is \(-8\), so the quantity decreases by 8 per time unit. \(120+8t\) shows growth. Exam tip: linear decay has a negative coefficient of the variable.

Related tags

PolynomialsLinear DecayLinear GrowthAlgebraic ExpressionsClass 9 MathematicsLinear Growth And DecayIntroduction To PolynomialsMathematics

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