Q 1.2.6S: Ed buys a TV from Al for $480 by paying $50 in cash, $100 every 3 months for a year (4 payments of $100), and a final payment of $X in 15 months (3 months after the last $100 payment). Find $X if Al earns a 3 month compounded interest rate of 3%. What is $X if Al earns a 1 month rate of 1%? Q 1.2.6S: Ed buys a TV from Al for $480 by paying $50 in cash, $100 every 3 months for a year (4 payments of $100), and a final payment of $X in 15 months (3 months after the last $100 payment). Find $X if Al earns a 3 month compounded interest rate of 3%. What is $X if Al earns a 1 month rate of 1%