Suppose you owe ​$900 on your credit card and you decide to make no new purchases and to make the minimum monthly payment on the account. Assuming that the interest rate on your card is ​2% per month on the unpaid balance and that the minimum payment is ​4% of the total​ (balance plus​ interest), your balance after t months is given by ​B(t)=900​(0.9792^t​). Find your balance at each of the given times. Complete parts​ (a) through​ (e) below.