A-level Maths · Exponentials and logarithms

Exponential model: find the time

Solve an exponential growth or decay model for the time using natural logs.

0 correct out of 0Streak: 0

Question 1

The value, £V, of an investment is modelled by V=500e0.3tV = 500e^{0.3t}, where t is the time in years after the money was invested. Find the value of t for which the investment is worth £4000. Give your answer to 3 significant figures.

years

You can type 4.53, 3.2e-5, 3.2 × 10^-5 or 7/3.

Your progress is kept on this device only. Nothing you type is sent to us.

Stop spending Sunday on Monday's lesson.

Free to start, no card. Your first lesson is about two minutes away.

Start free