Mason Auto Repair specializes in the repair of foreign car transmissions. To encourage business, Mason offers a six-month warranty on all repairs. The following data are available for 2009:

Transmissions repaired, 2009 ..........2,430

Expected frequency of warranty claims ....... 0.07 per repair

Actual warranty claims, 2009 ............ 181

Estimated warranty liability, 1/1/09 ........ $1,100

Cost of each warranty claim ........... 21

Assume that warranty claims are paid in cash.

Required:

1. Compute the warranty expense for 2009.

2. Prepare the entry to record the payment of the 2009 warranty claims.

3. What is the December 31, 2009, balance in the estimated warranty liability account?

Why has the balance in the estimated warranty liability account changed from January 1, 2009?