The process for converting present values into future values is called

$.$ This process requires knowledge of the values of three of

four time$-$value$-$of$-$money variables. Which of the following is not one

les?

The present value $($PV$)$ of the amount invested

The interest rate $($I$)$ that could be earned by invested funds

The inflation rate indicating the change in average prices

The duration of the investment $($ N $)$