- The graph of f shows the book value of a vehicle x years after the time Joe bought it. The graph of g shows the cost price of a similar new vehicle x years later.
- On 1 June 2016 a bank granted Thabiso a loan of R250 000 at an interest rate of 15% p.a. compounded monthly, to buy a car. Thabiso agreed to repay the loan in monthly installments commencing on 1 July 2016 and ending 4 years later on 1 June 2020. However Thabiso was unable to make the first two installments and only commenced with the monthly installments on 1 September 2016.