The Following Data Have Been Provided by Vegas Corporation

The following data have been provided by Vegas Corporation:
$$\begin{array} { l l} \text { Budgeted production } & \text { 8,300units } \\\text { Stardard machine-hours per unit } & 4.5 \text { machine-hours } \\\text { Standard lubricarnts } & \$ \quad 5.10 \text { per machine-hour } \\\text { Standard supplies } & \$ \quad 2.90 \text { per machine-hour }\end{array}$$
$$\begin{array} { lr } \text { Actual production } & 8,600 \text { units } \\\text { Actual machine-hours } & 38,270 \text { machine-hours } \\\text { Actual lubricarits (total) } & \$ 211,801 \\\text { Actual supplies (total) } & \$ 107,566\end{array}$$
Required:
Compute the variable overhead rate variances for lubricants and for supplies. Indicate whether each of the variances is favorable (F) or unfavorable (U). Show your work.