Banu recieves an invoice from Staples dated April 3rd, 2012 for $520 with terms 5/10, 3/16,n/34. If Banu pays the invoice in full on April 18th, 2012, a. How many days were there between the date of the invoice, and when the invoice was paid? b. How much is the amount of the discount? c. How much was paid? Number of days = Amount of Discount =$ (rounded to the nearest cent) Payment =$ (rounded to the nearest cent)