An increase in both the equilibrium price and the equilibrium quantity of a good could not have been caused by a shift in supply alone

When a sales tax is imposed on sellers, the supply curve shifts so that the vertical distance between the old and the new supply curve equals the

A) sales tax multiplied by the price elasticity of demand. B) sales tax multiplied by the price elasticity of supply. C) amount of the sales tax. D) sales tax divided by the price elasticity of demand.

A bank has excess reserves of $4,000 and demand deposit liabilities of $100,000 when the required reserve ratio is 20 percent. If the reserve ratio is raised to 25 percent, the bank's excess reserves will be

A) -$5,000. B) -$1,000. C) $1,000. D) $5,000.