3. A rm uses both labor and capital to produce the output and has a production function q(K, L) = 2K +L. (a) A rm's short-run capital is xed at 10, i.e., K = 10. In order to produce 25 units of output, how many units of labor does the rm need? (b) Does this rm exhibits an increasing, decreasing, or constant return to scale? Why? - - 11' 1\\