If the price is (P(n)=200+25n), what will the price be at (n=2)?
Answer and explanation
Correct answer: 250
Given \(P(n)=200+25n\), substitute \(n=2\): \(P(2)=200+25(2)=200+50=250\). Hence, 250 is correct. The value 225 would result from adding the increase only once, but at \(n=2\), the increase of 25 is counted twice. Exam tip: To evaluate a polynomial, substitute the given value, multiply first, and then add or subtract.
Frequently asked questions
What is the correct answer to this question?
250
Why is this the correct answer?
Given \(P(n)=200+25n\), substitute \(n=2\): \(P(2)=200+25(2)=200+50=250\). Hence, 250 is correct. The value 225 would result from adding the increase only once, but at \(n=2\), the increase of 25 is counted twice. Exam tip: To evaluate a polynomial, substitute the given value, multiply first, and then add or subtract.
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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