Bob, a university student, needs to borrow $5,000 for his tuition bill. He agrees to pay back the loan in one lump-sum payment five years from now after he is out of school. The bank says that the payment has to be $7,012.76 If Bob borrows the $5,000 from the bank, what interest rate is he paying on his loan? Please show and explain your calculations.

and if can give example to show understanding