annual percentage rate

Shakina Brewster has a Target revolving credit account that has an annual percentage rate of 18% on the unpaid balance. Her unpaid balance for the July billing cycle is $1,285.96. During the billing cycle, Shakina purchased groceries for $98.76 and received $50 in cash. She purchased linens for $46.98. Shakina made a payment of $135. Find the finance charge and new balance if Target uses the unpaid balance method.