Answer:
Answer 1. Warranty expense to be recognized is ($11,000*0.04)=$440
Answer 2. Warranty liability at end of year one is $440
Answer 3. Warranty liability at the end of year two is ($440-$130)=$310
Answer 4.
Cash $11,000
To sales $11,000
(sale of copier recorded)
Warranty expense $440
To Warranty liability $440
(Warranty recorded at the end of year 1)
Warranty liability $130
To inventory $130
(Repairs done to copier)