In the formula i=p·r·t, what does r stand for? a. rate: the percent that interest is paid annually as a decimal b. ratio: the size of the interest interval compared to time c. return: how much money you end up earning d. reserves: how much money you have in the investment

a. Rate: the percent that interest is paid annually as a decimal.

Explanation:-

In the given formula  of simple interest I = P.r.t

P is the principal or initial amount.

r is the rate of interest paid annually as a decimal.

t is the time period in years.

The simple interest formula permits us to calculate I, which is the interest charged or earned on a loan.

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