Answer:
prepaid subscrption ending balance
2009 11,610
2010 6,460
2011 1,290
Step-by-step explanation:
15,480 / 36 months = 430 per month
December 31th Adjustment:
430 x 9 months (from March 31,2009 to December 31,2009)
received magazinesfor $ 3,870
balance: 15,480 - 3,870 = 11,610
Decmeber 31th 2010
430 x 12 months = 5,160
balance 11,610 - 5,160 = 6,450
2011 adjustment
again for 12 months: 5,160
6,450 - 5,160 = 1,290