Jonah recieves an invoice from Staples dated February 4 th, 2013 for $900 with terms 4/7,3/15,n/31. If Jonah pays the invoice in full on February 22 nd, 2013 , a. How many days were there between the date of the invoice, and when the invoice was paid? b. How much is the amount of the discount? c. How much was paid? Number of days = Amount of Discount =$ (rounded to the nearest cent) Payment =$ (rounded to the nearest cent)