show work so I can understand. Suppose you that labour supply is perfectly elastic at an hourly wage of $29.4 up to a quantity of labour if 7350 and for an hourly wage greater than or equal to $ 29.4 the labour supply curve is Ls= -7500 + 500w. The labour demand curve is Ld = 39500 - 500w. Calculate the total amount of economic rent at market equilibrium. Do not round