4. Topic 4(COLON) Indices, Exponentials and Logarithms

Lesson 4.4: Modelling Growth And Decay — Quiz

Test your understanding of lesson 4.4: modelling growth and decay with 5 practice questions.

Practice Questions

Question 1

If a population of bacteria doubles every 3 hours, what will be the population after 9 hours if the initial population is 100?

Question 2

A car depreciates in value at a rate of 15% per year. If the car's initial value is $20,000, what will its value be after 2 years?

Question 3

If an investment grows at an annual rate of 5%, how much will an initial investment of $1,000 be worth after 3 years?

Question 4

A certain species of plant decays at a rate of 10% per year. If the initial population is 5000, how much will remain after 5 years?

Question 5

If a loan amount of $10,000 is compounded annually at a rate of 6%, what will be the total amount owed after 4 years?