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Subjects
Class 9MathematicsIntroduction to PolynomialsLinear growth and decayEasyLevel 40
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If (F(t)=41+6t), what is (F(0))?

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Answer and explanation

Correct answer: 41

Substitute t=0: F(0)=41+6(0)=41. Therefore, the correct answer is 41. The number 6 is the coefficient of t and represents the rate of increase, not the initial value. Exam tip: for a linear expression a+bt, its value at t=0 is always a.

Related tags

PolynomialsLinear ExpressionFunction EvaluationInitial ValueSubstitution

Frequently asked questions

What is the correct answer to this question?

41

Why is this the correct answer?

Substitute t=0: F(0)=41+6(0)=41. Therefore, the correct answer is 41. The number 6 is the coefficient of t and represents the rate of increase, not the initial value. Exam tip: for a linear expression a+bt, its value at t=0 is always a.

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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10 more MCQs
  1. 1If the height of a plant is (h(t)=20+3t) cm, what type of change does it show?
  2. 2If the amount of water is (W(t)=50-4t) litres, what type of change is it?
  3. 3In the linear rule (C(d)=15+2d), what is the initial value?
  4. 4In the linear rule (P(t)=80-5t), what is the rate of change per unit?
  5. 5If (S(t)=10+6t), what will be the value of (S(t)) at (t=4)?
  6. 6If (M(t)=90-7t), what is the value of (M(t)) at (t=5)?
  7. 7Books in a library increase according to (B(n)=100+8n). What does the coefficient of (n) show?
  8. 8If water left in a tank is (L(t)=60-3t) litres, how much water was there at (t=0)?
  9. 9Which rule represents linear growth?
  10. 10Which rule represents linear decay?
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