please explain step by step with formula

Milano Pizza is a small neighborhood pizzeria that has a small area for in-store dining as well as offering take-out and free home delivery services. The pizzeria's owner has determined that the shop has two major cost drivers-the number of pizzas sold and the number of deliveries made. The pizzeria's cost formulas appear below: In November, the pizzeria budgeted for 2250 pizzas at an average selling price of $22 per pizza and for 210 deliveries Data concerning the pizzena's actual results in November appear below: Required: 1. Compute the revenue and spending variances for the pirzeria for November. (lndicate the effect of each variance by selecting "F" for fovorable, "U" for unfovoroble, ond "None" for no effect (i.e., zero variance). Input all amounts as positive values.)