Answer
Find out the how many years was the money in the account .
To prove
Formula

As given
Bonita deposited $1300 into a bank account that earned 5.75% simple interest each year.
She earned $299 in interest before closing the account.
Principle = $1300
Rate = 5.75%
Simple interest = $299
Put all the value in the formula



Time = 4 years
Therefore the 4 years was the money in the account .