For the credit card? account, assume one month between billing dates? (with the appropriate number of? days) and interest of per month on the average daily balance. Find ?(a) the average daily? balance, ?(b) the monthly finance? charge, and ?(c) the account balance for the next billing. Previous? Balance: $484.59January 13   Billing DateJanuary 15   Returns   ?$104.85January 21   Clothes   ?$114.66January 27   Bus tickets  ?$68.71February 3     Payment  ?$135February 6    Flowers  ?$53.13