please solve 9-19 thank you!

PROBLEM 9-19 More Than One Cost Driver LO9-2, LO9-3 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 1,200 pizzas at an average selling price of $13.50 per pizza and for 180 deliveries. Chapter 9 Data concerning the pizzeria's actual results in November appear below: Required: 1. Compute the revenue and spending variances for the pizzeria for November. (Hint: Refer to Exhibit 9-6.) 2. Explain the revenue and spending variances. PROBLEM 9-20 Basic Variance Analysis; the Impact of Variances on Unit Costs LO9-4, LO9-5, LO9-6