If (X(t)=8+6t), what is the difference between (X(4)) and (X(0))?
Answer and explanation
Correct answer: 24
Here, \(X(4)=8+6\times4=32\) and \(X(0)=8\). Therefore, the difference is \(32-8=24\). Option 32 is the value of \(X(4)\), not the difference. Exam tip: In a linear expression \(a+bt\), multiply the change in \(t\) by the coefficient \(b\) to find the change in the value quickly.
Frequently asked questions
What is the correct answer to this question?
24
Why is this the correct answer?
Here, \(X(4)=8+6\times4=32\) and \(X(0)=8\). Therefore, the difference is \(32-8=24\). Option 32 is the value of \(X(4)\), not the difference. Exam tip: In a linear expression \(a+bt\), multiply the change in \(t\) by the coefficient \(b\) to find the change in the value quickly.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear growth and decay.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
