On November 1st, Neiman Marcus at the Florida Mall signed a $100,000, 2%, eight-month note payable with all of the principal and interest due at maturity eight months later on July 1. Neiman Marcus' Store at Florida Mall should report interest payable at (year-end) December 31, in the amount of:

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?