A restaurant has a monopoly in Montreal.

Its production function is Q = 20L, where L is the amount of labor it uses and Q is the number of meals it produces.

To hire L units of labor, the restaurant must pay a wage of 10+L per unit of labor.

The demand curve for meals at the restaurant is given by: P = 100 - Q/1000.

How many workers will the restaurant (approximately) hire?

1,420

7,100

710

14,200