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If (A(t)=44+6t) and (B(t)=70+11t), how does (B(t)-A(t)) change?

Answer and explanation

Correct answer: It increases by 5 at each step

B(t)-A(t)=(70+11t)-(44+6t)=26+5t. The coefficient of t is 5, so the difference increases by 5 for every increase of 1 in t. Here, 26 is only the initial difference, not the rate of increase, so option D is incorrect. Exam tip: when subtracting linear expressions, subtract constant terms and t-terms separately.

Related tags

Linear PolynomialsLinear GrowthRate Of ChangeDifference Of FunctionsAlgebraic ExpressionsLinear Growth And DecayIntroduction To PolynomialsMathematics

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