Suppose recent changes to immigration laws have decreased decreases the supply of immigrant labor, increasing increasing wages in manual labor occupations. how might this affect the market for construction

Manual labor is one of the major inputs for construction projects, and naturally one of the major cost drivers. If the cost of manual labor increases, the price of construction projects will increase across all quantities. This effectively shifts the supply graph to the left. If supply and demand are behaving normally, this means the market for construction will now feature a lower quantity of construction projects at a higher average price. 

there's 11 people for the 1st position. then, no matter who gets it, there's only 10 left for the second, and then 9 left for the third. 11 x 10 x 9 = 990.   the answer is there are 990 different ways the positions can be filled by these applicants

answer///supply is elastic, and demand is inelastic;