Tammy is talented at craft but lacks the cash flow management skills required to run a business. She opens a store, Tammy's Craft Corner, with the help of her son David - a business major - who manages the budgets and expenses of the business. David prepares the quarterly budget and maintains a company book for recording all transactions. The company book balance that David regularly updates is the sum of:

Lillypad toys is a manufacturer of educational toys for children. six months ago, the company's research and development division came up with an idea for a unique touchscreen device that can be used to introduce children to a number of foreign languages. three months ago, the company produced a working prototype, and last month the company successfully launched its new device on the commercial market. what should lillypad's managers prepare for next? a. increased competition from imitators b. a prolonged period of uncontested success c. a sharp decline in demand for the product d. a difficult struggle to move from invention to innovation

When immigration adds to the size of the domestic labor pool, which of the following is likely to occur? a. wages decrease. b. productivity increases. c. consumption decreases. d. minimum wage increases.

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?