An investor pays into an account today. The account pays simple interest at a rate of  pa. Which of the following is the amount in the account in five years' time?

In the following figure, identify the curves of simple and compound interest.

For a fixed principal amount, after exactly one unit of time, simple interest and compound interest rates with equal value are equivalent.

Let be the rate of interest and be the equivalent rate of discount. Which of the following relationships is true?