2. [3 points] What can you say about the return to scale of the following production function Q = min{al, bK}, where a and b are positive constants? 2 3. [3 points] A firm's production function is Q = 523Ka, with MP, = 5: IN 1 2 3 L 3K3, and MPk = 5-L3K 3. Lis IIN labour and K is capital. a. Does this production function exibit constant, increasing or decreasing returns to scale? b. What is the marginal rate of technichal substitution of L for K? c. Plot 2 Isoquants (Q=100, Q =50) (with at least 3 points each). 4. [2 points] Could the isoquants corresponding to two different levels of output ever cross