If (f(x)=6x+11), what is the value of (f(4)+f(8))?
Answer and explanation
Correct answer: 94
Given \(f(x)=6x+11\), we get \(f(4)=6\times4+11=35\) and \(f(8)=6\times8+11=59\). Therefore, \(f(4)+f(8)=35+59=94\). The value 96 can result from incorrectly handling or omitting the constant term 11. Exam tip: evaluate each function value separately before adding them.
Frequently asked questions
What is the correct answer to this question?
94
Why is this the correct answer?
Given \(f(x)=6x+11\), we get \(f(4)=6\times4+11=35\) and \(f(8)=6\times8+11=59\). Therefore, \(f(4)+f(8)=35+59=94\). The value 96 can result from incorrectly handling or omitting the constant term 11. Exam tip: evaluate each function value separately before adding them.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear growth and decay.
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