tiny screwdrivers and tiny screws as it wants, at a price of $r each. a. Solve for the tangency condition that determines the amount of K and L the firm will buy to produce a given amount of eyeglasses at minimum cost. [You should get an equation in terms of K,L,w and r.] Also, explain this condition in words. b. How many tiny screwdrivers and tiny screws will the firm own, and how many workers will the firm employ if it decides to produce 100 eyeglasses at minimum cost