Are the following productions functions exhibit increasing/constant/decreasing return to scale? Given that the wage rate for per unit of labor is $10 and rental rate for unit of capital is $10, according to these functions, are the firms operate in economies or diseconomies of scale?
Q=F(K,L)=3K+2L
Q=F(K,L)=K^(1/4) L^(1/4)
Q=F(K,L)=K^(3/4) L^(1/2)