The pizzeria's cost formulas appear below: Cost per Fixed Cost per Month Cost per Delivery Pizza $3.80 $5,220 $630 $0.05 Pizza ingredients Kitchen staff Utilities ... Delivery person Delivery vehicle Equipment depreciation Rent Miscellaneous $3.50 $1.50 $540 $275 $1,830 $820 $0.15 In November, the pizzeria budgeted for 1,200 pizzas at an average selling price of $13.50 per pizza and for 180 deliveries. Data concerning the pizzeria's actual results in November were as follows: Pizzas Deliveries Revenue Pizza ingredients Kitchen staff... Utilities Delivery person Delivery vehicle Equipment depreciation Rent .... Miscellaneous Actual Results 1,240 174 $17,420 $4,985 $5,281 $984 $609 $655 $275 $1,830 $954 Required: 1. Using Exhibit 9-11 as your guide, prepare a flexible budget performance report that shows both revenue and spending variances and activity variances for the pizzeria for November. 2. Explain the activity variances