Speedy Printing uses photocopiers (K) and printers (L). Its production function is Q = K0.75L0.25, where Q

Question:

Speedy Printing uses photocopiers (K) and printers (L). Its production function is Q = K0.75L0.25, where Q is the number of pages per day. Suppose that the rental rate on copiers is $48 per day and that Speedy wants to produce 1,000 pages per day.
a. Derive the demand for labor.
b. Show that the demand for labor satisfies the Law of Demand.