Dirt Diggers (DD) is a firm that excavates roadside ditches for laying drainpipe. Its output follows the production function: Q = 10L -.1L, where L denotes labor hours and Q the length of the ditch in meters. The firm hires labor at a wage of $12 per hour. a) DD has received an offer to excavate 250 meters for a price of $500. Should it accept the offer? (3) b) Answer part a assuming that DD is offered as much or as little excavation work as it desires at a price of $2.00 per meter dug. (4)