An incomplete cost schedule for producing pizzas

Pizzas	Fixed Cost ($)	Variable Cost ($)	Total Cost ($)
0
1			48
2		17
3		27
4			78
5	40		90

(a) What is the total cost if 0 pizzas are produced?

(b) What is the average variable cost of 5 pizzas?

(c) What is the marginal cost of the third pizza?

(d) If marginal revenue was $10, what would be the profit maximising output?

(e) If marginal revenue was $7, what would be the profit maximising output?