On September 1, Home Store sells a mower (that costs $140) for $440 cash with a one-year warranty that covers parts. Warranty expense is estimated at 11% of sales. On January 24 of the following year, the mower is brought in for repairs covered under the warranty requiring $31 in materials taken from the Repair Parts Inventory. Prepare the September 1 entry to record the mower sale (and cost of sale) and the January 24 entry to record the warranty repairs.