Final answer:
For indirect materials, the flexible budget report should show an unfavorable variance of $400 since actual costs ($28,000) exceeded the flexible budgeted costs ($27,600) at 9,200 direct labor hours.
Step-by-step explanation:
The question pertains to the calculation of a variance in a flexible budget report for indirect materials. When actual hours worked (9,200) exceed the hours in the flexible budget (9,000), we need to adjust the budget to reflect what the indirect materials cost should have been at that level of activity. The flexible budget for indirect materials was $27,000 at 9,000 hours, which gives us a rate of $3 per hour ($27,000 / 9,000 hours). At 9,200 hours, the adjusted flexible budget for indirect materials would be 9,200 hours x $3 per hour = $27,600. With the actual cost being $28,000, the variance is $28,000 - $27,600 = $400 unfavorable, because the actual cost exceeded the flexible budget amount.