Answer: $6,904 favorable
Step-by-step explanation:
Cost formula is $4.80 per car + $26,000.
1,230 cars were actually washed last month.
Budget for washing expense = (4.80 * 1,230) + 26,000
= $31,904
Actual washing expense = $25,000
Variance = Budgeted - Actual
= 31,904 - 25,000
= $6,904 favorable