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If the reserve requirement is 10 percent, what amount of excess reserves does a bank acquire when a business deposits a $500 check drawn on another bank?

Atennis club charges a monthly membership fee of $150 and charges it members $10 per hour to use a court. there's also $500 fee to become a member. stella joined the tennis club last spring, and she has been a member for 5 months. she has been playing 10 hours of tennis each month. stella values an hour of her time at $20. during a boring afternoon meeting, stella thinks about reserving a court to work on her serve for an hour tonight. what's stella's opportunity cost of working on her serve for an hour?

According to the balanced budget multiplier, an increase in government spending of $10,000 that is financed by an increase of $10,000 in taxes will have what effect on the economy when mpc is 0.80?