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If (p(x)=3x+1), what is the value of (p(p(2)))?

Answer and explanation

Correct answer: 22

For a composite expression, evaluate the inner function first. p(2)=3×2+1=7. Then p(7)=3×7+1=22, so p(p(2))=22. Option 21 results from taking only 3×7 and forgetting to add the constant term 1. Exam tip: in p(p(a)), first find p(a), then substitute that result into p again.

Related tags

PolynomialsLinear PolynomialsFunction EvaluationComposite FunctionsClass 9 MathematicsIntroduction To PolynomialsMathematicsClass 9 Mcq

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