Required information [The following information applies to the questions displayed below.] Adger Corporation is a service company that measures its output based on the number of customers served. The company provided the following fixed and variable cost estimates that it uses for budgeting purposes and the actual results for May as shown below: Fixed Element per Month Revenue Employee salaries and wages $ 60,000 Travel expenses Other expenses $ 39,000 per Customer Served Variable Element Actual Total for May $ 200,500 $ 6,200 $ 2,100 $ 520. $ 132,300 $ 15,200 $ 37,100 When preparing its planning budget the company estimated that it would serve 30 customers per month; however, during May the company actually served 35 customers. 6. What is Adger's revenue variance for May? Note: 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. Revenue variance