Problem: The cost formula for flexible budgeting of administrative expense is: $10,000 + $1,000(Productions) + $50(Performances) The actual number of productions was 10 and the actual number of performances was 100. The actual administrative expense was $21,000. Which of the following is true? • The flexible budgeted administrative expense is $25.000 which is favorable. • The flexible budgeted administrative expense is $25.000 which is unfavorable. • The flexible budgeted administrative expense is $20,000 which is unfavorable. • The flexible budgeted administrative expense is $20,000 which is favorable.