If (E(t)=10+8t), what is the difference between (E(2)) and (E(3))?
Answer and explanation
Correct answer: 8
Here, E(2)=10+8(2)=26 and E(3)=10+8(3)=34. Therefore, the difference is 34-26=8. A value such as 16 may result from incorrectly adding the two values of t in 8t; here t increases by only one unit. Exam tip: in a linear expression a+bt, the difference between consecutive values is always b.
Frequently asked questions
What is the correct answer to this question?
8
Why is this the correct answer?
Here, E(2)=10+8(2)=26 and E(3)=10+8(3)=34. Therefore, the difference is 34-26=8. A value such as 16 may result from incorrectly adding the two values of t in 8t; here t increases by only one unit. Exam tip: in a linear expression a+bt, the difference between consecutive values is always 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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