More Lessons for A Level Maths

Math Worksheets

Videos, activities and worksheets that are suitable for A Level Maths to help students learn how to solve exponential growth and decay word problems.

Exponential Decay : C4 Edexcel January 2013 Q8(b)

In this video, we know that a population is growing exponentially; we also know there were 200 bacteria 3 days ago and 1000 bacteria yesterday. How many bacteria will be present tomorrow?

This video explains how to determine an exponential growth function from given information. Then it explains how to determine when a certain population will be reached and when it will double.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.