Varcoe Corporation bases its budgets on the activity measure customers served. During September, the company planned to serve 33,000 customers, but actually served 28,000 customers. Revenue is $3.86 per customer served. Wages and salaries are $34,700 per month plus $1.26 per customer served. Supplies are $0.56 per customer served. Insurance is $8,900 per month. Miscellaneous expenses are $7,000 per month plus $0.26 per customer served. Required: Prepare a report showing the company's activity variances for September. Indicate in each case whether the variance is favorable (F) or unfavorable (U). (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values and enter any losses with a minus sign.) Activity Variances Varco Corporation Activity Variances For the Month Ended September 30 Flexible Planning Budget Budget Customer served 28,000 33,000 Revenue Expenses Wages and salarios Supplies Insurance Miscellaneous expense Total expense Net operating income (los)