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Class 9MathematicsIntroduction to PolynomialsLinear growth and decayEasyLevel 38
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If (A(t)=12+4t), by how much will (A(t)) increase when (t) increases by (1)?

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Answer and explanation

Correct answer: 4

In A(t)=12+4t, the coefficient of t is 4. Therefore, when t increases by 1, A(t) increases by 4×1=4. The constant term 12 does not affect the rate of increase. Exam tip: In a linear expression a+bt, the change per 1 unit is b.

Related tags

Linear PolynomialsLinear GrowthCoefficientRate Of ChangeUnit Increase

Frequently asked questions

What is the correct answer to this question?

4

Why is this the correct answer?

In A(t)=12+4t, the coefficient of t is 4. Therefore, when t increases by 1, A(t) increases by 4×1=4. The constant term 12 does not affect the rate of increase. Exam tip: In a linear expression a+bt, the change per 1 unit is b.

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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