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Two models are (A(t)=10+3t) and (B(t)=25+t). Which value is greater at (t=5)?

Answer and explanation

Correct answer: The value of B(t) is greater

Substituting t=5 gives A(5)=10+3(5)=25 and B(5)=25+5=30. Since 30 is greater than 25, B(t) has the greater value. The “both values are equal” option is incorrect because the values differ by 5. Exam tip: To compare linear models at a given t, substitute that value into both expressions before comparing.

Related tags

PolynomialsLinear ModelsSubstitutionValue ComparisonAlgebraLinear Growth And DecayIntroduction To PolynomialsMathematics

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