Skip to content

Course home

Sign up

1.1 Exponential Models

EasyMediumHard
12345678910111213141516171819202122232425262728293031
Question 28

The growth of a specialized digital database is being tracked. The total amount of data stored, DDD terabytes (TB), at time ttt years after the system went online is modelled by the equation

log⁡10D=0.65+0.42t \log_{10} D = 0.65 + 0.42t log10​D=0.65+0.42t
a.

Write this equation in the form D=pqtD = pq^tD=pqt, where ppp and qqq are constants to be found. Give each value to 4 significant figures.

[3]
b.

When t=Tt = Tt=T, the amount of data stored is 350 TB. Find the value of TTT according to the model, giving your answer to 3 significant figures.

[2]
c.

The current hardware infrastructure can accommodate a maximum of 2,000 TB. Determine whether or not the data volume will exceed this limit within the first 6 years of the study.

[2]
Markscheme

1.1 Exponential Models Questions

  1. A Level
  2. /Maths
  3. /1.1 Exponential Models

42 exam-style questions on Edexcel A Level Maths 1.1 Exponential Models. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank