17. At a price of $17 Lane must be selling 4 pizzas per hour. Using the same reasoning as in the previous question we know that MC must be over $12 but no more than $14.

Q	P	TR	MR
1	20	20	20
2	19	38	18
3	18	54	16
4	17	68	14
5	16	80	12
6	15	90	10
7	14	98	8
8	13	104	6