I want the answer as soon as possible

Which of the following is a true statement about milestones

This os integrated the processing power of windows nt with the easy-to-use gui of windows 98. windows 2000 windows 3.11 windows for workgroups windowa millennium edition

Helen's credit card has an apr of 15.32% and a grace period of 17 days and helen pays her balance in the full every month. if her last billing cycle ended on september 26, 2009, and she made her payment on october 11, 2009, did she owe any interest on her last statement's balance?