Tara owes $14,375 in credit card debt. The interest accrues at a rate of 5.3%. She is also borrowing $570 each month for rent from her parents. She does not pay interest on the money she borrows from her parents.

a. Let f(t) represent the amount of money Tara owes in credit card debt, where t is the number of years after interest begins to accrue. Let g(t) represent the amount of money Tara owes to her parents, where t represents the number of years passed. Write a function (f + g)(t) to represent the total money that Tara owes.

b. How much will Tara have to repay if she continues this way without any repayment for 2 years?