As an HR representative analyzing an employee's tuition reimbursement loan, you need to calculate the rate of simple interest. Which formula should you use to set up the equation, where $I$ is the interest paid, $P$ is the principal amount, $r$ is the interest rate, and $t$ is the time?

In the simple interest formula $I = Prt$ used to calculate loan terms, the variable that represents the interest rate (expressed as a decimal) is ____.

A student is calculating the annual simple interest rate they are paying on a tuition loan. To solve for the rate ($r$) using the formula $I = Prt$, arrange the following procedural steps in the correct logical order from start to finish.

An employee borrows {}\7{,}500$from their company's education fund to cover professional certification fees. After${}5$years, they have paid a total of${}$1{,}500$in simple interest. Match each value or term from this loan scenario to the correct variable in the simple interest formula$I = Prt$.

In the simple interest formula $I = Prt$ used to calculate a loan's interest rate, the variable $t$ represents the time period of the loan expressed in months.