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1.6 Exponentials and logarithms

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Question 43

Michael's car is valued after 2 years and after 5 years. V=Ae−ktV = Ae^{-kt}V=Ae−kt.

Time (years)25
Value (£)4720029200
a.

Explain what the value of A A\,A represents.

[1]
b.

Show that ln⁡V=ln⁡A−kt\ln V = \ln A - ktlnV=lnA−kt

[1]
c.

Calculate the value of A A\,A and the value of kkk

[4]
d.

Use the model to predict the value of the car after 10 years.

[2]

1.6 Exponentials and logarithms Questions

  1. A Level
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  3. /1.6 Exponentials and logarithms