A plant's height is (H(t)=24+5t) cm. What will be the height at (t=4)?
Answer and explanation
Correct answer: 44 cm
Given \(H(t)=24+5t\). Substituting \(t=4\), \(H(4)=24+5(4)=24+20=44\) cm. Therefore, 44 cm is correct. The value 49 cm would result from an error in multiplication or addition. Exam tip: To evaluate a linear expression, substitute the given value for the variable and calculate step by step.
Frequently asked questions
What is the correct answer to this question?
44 cm
Why is this the correct answer?
Given \(H(t)=24+5t\). Substituting \(t=4\), \(H(4)=24+5(4)=24+20=44\) cm. Therefore, 44 cm is correct. The value 49 cm would result from an error in multiplication or addition. Exam tip: To evaluate a linear expression, substitute the given value for the variable and calculate step by step.
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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