Danny recieves an invoice from Staples dated September 2nd, 2011 for $1,460 with terms 6/9, 2/15, n/28. If Danny pays the invoice in full on September 11th, 2011, a. How many days were there between the date of the invoice, and when the invoice was paid? b. How much is the amount of the discount? c. How much was paid? Number of days = Amount of Discount = $ (rounded to the nearest cent) Payment = $ (rounded to the nearest cent)