No guessing explain how to solve

julie earned simple interest on $8250 with an annual interest rate of 3.9% for 7 years. how much did she earn in interest? round your answer to the nearest cent.

simple interest: i = p • r • t

We meet again.  I see you are asking about another similar equation, and I will give you the same response I did last time.  You simply plug the values into the equation in solve, so it would look like this:
I=8,250*.039*7.
And you can do the rest.  I hope this was helpful, have a nice day! :)

21.00 per mile and plus 5.50 is 26.50 i think that im pretty sure it is right