You have $50 and want to buy some cd's. if prices of cd's rose from $5 each to $10, how would your quantity of demanded of cd's change?

If you have 50$ and each cd = 5$
you would have 50÷5=10 CDs
but if you have 50$ and each CD=10$
you would have 5 CDs
so the change of the quantity is 5 CDs

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.