Emma notices that since her credit card balance compounds monthly, she is charged more than 15% of her initial loan amount in interest each year.


She wants to know how much she would pay if the card were compounded annually at a rate of 15%.


Which expression could Emma use to evaluate her balance with an annual compounding interest rate?

a. ) 300(1. 15)^t

b. ) 300(1. 015)^12t

c. ) 300(1. 15)^12t

d. ) 300(1. 0125)^t