9.) An invoice for $8,686.00 dated October 25, 2019, with terms 5/10, 2/30 a.) What payment must be made on November 4, 2019 to reduce the debt to $3,589.00? Hint: $3,409.55 is not the correct answerf b.) What would the balance be if a payment of $2,900.00 is made on the last day to take advantage of the 5% discount