The beginning balance of a credit card account is $500 the monthly interest rate is 0.012 if a payment of $100 is made on the last day of the month what is the ending balance?

Marshall went to the state fair and bought 3 tickets. each ticket to the fair cost x dollars. after he bought the tickets, he had $3.25 left in change. write an expression that represents the amount of money, in dollars, that marshall had before he bought the tickets. n