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If (E(t)=10+8t), what is the difference between (E(2)) and (E(3))?

Answer and explanation

Correct answer: 8

Here, E(2)=10+8(2)=26 and E(3)=10+8(3)=34. Therefore, the difference is 34-26=8. A value such as 16 may result from incorrectly adding the two values of t in 8t; here t increases by only one unit. Exam tip: in a linear expression a+bt, the difference between consecutive values is always b.

Related tags

Linear FunctionLinear GrowthConsecutive DifferencePolynomialsSubstitutionLinear Growth And DecayIntroduction To PolynomialsMathematics

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